Uploaded byAnneRostom
2,283 views

4 bi0 1b_que_20140519

1) The document is a biology exam paper containing multiple choice and short answer questions about the digestive system and effects of smoking. 2) The first question asks students to complete a table about digestive processes and describe digestion in the mouth. 3) The second question provides data about deaths in the UK caused by cancer, lung diseases and circulatory diseases, and asks students to calculate the percentage caused by smoking.

Embed presentation

Download to read offline
Centre Number Candidate Number Write your name here Surname Other names Total Marks Paper Reference Turn over P42862A ©2014 Pearson Education Ltd. 1/1/1/1/1/ *P42862A0132* Biology Unit: KBI0/4BI0 Science (Double Award) KSC0/4SC0 Paper: 1B Monday 19 May 2014 – Afternoon Time: 2 hours You must have: Ruler Calculator Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name, centre number and candidate number. Answer all questions. Answer the questions in the spaces provided – there may be more space than you need. Show all the steps in any calculations and state the units. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . Information The total mark for this paper is 120. The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. Advice Read each question carefully before you start to answer it. Keep an eye on the time. Write your answers neatly and in good English. Try to answer every question. Check your answers if you have time at the end. Pearson Edexcel Certificate Pearson Edexcel International GCSE KBI0/1B 4BI0/1B KSC0/1B 4SC0/1B
2 *P42862A0232* Answer ALL questions. 1 (a) The table contains names and descriptions of processes involved in the digestive system. Complete the table by filling in the missing names and descriptions. (5) Name of process Description of process food enters the mouth digestion small food molecules move from the small intestine into the blood small food molecules are used to build large molecules egestion
3 *P42862A0332* Turn over (b) Describe the process of digestion in the mouth. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (c) A student carried out some food tests on two samples of food, A and B. The table shows the results. Sample Reagent used in food test Colour seen after adding the reagent A iodine solution blue black B Benedict’s brick red The student concluded that both samples of food contained carbohydrates. Do you agree with this conclusion? Give reasons for your answer. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 1 = 10 marks)
4 *P42862A0432* 2 The table shows the number of deaths in the United Kingdom in 2010 caused by cancer, lung diseases and circulatory diseases. The table also shows the number of these deaths caused by smoking. Cause of death Total number of deaths Number of these deaths caused by smoking cancer 66 000 38 000 lung diseases 46 000 22 000 circulatory diseases 138 000 20 000 (a) (i) What is the total number of deaths caused by all three diseases? (1) .................................................................................................................................................................................................................................................................................... (ii) Calculate the percentage of the total number of deaths that are caused by smoking. Show your working. (2) percentage ............................................................................... % (b) Chemicals in cigarette smoke cause mutations in cells which can lead to cancer. What is meant by the term mutation? (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
5 *P42862A0532* Turn over (c) Emphysema is a lung disease that is usually caused by smoking. The diagram shows a cross section through two alveoli X and Y. Alveolus X is from a non-smoker and alveolus Y is from a smoker suffering from emphysema. X Y Use the diagram to suggest and explain the effect of emphysema on gas exchange. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
6 *P42862A0632* (d) Smoking can increase the risk of developing coronary heart disease. Explain how coronary heart disease can cause death. (5) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 2 = 12 marks)
7 *P42862A0732* Turn over BLANK PAGE
8 *P42862A0832* 3 The table shows the area of land used, in hectares, to grow tea plants at different altitudes (height above sea level) in Sri Lanka between the years 1990–2000. Area of land used in hectares Year High altitude Medium altitude Low altitude Total 1990 73 138 83 223 65 397 221 758 1992 74 141 85 510 62 185 221 836 1994 51 443 56 155 79 711 187 309 1996 52 272 56 863 79 836 188 971 1998 51 444 58 155 79 711 189 310 2000 52 272 56 863 79 836 188 971 (a) Describe the changes that have taken place in the area of land used to grow tea plants between 1990 and 2000. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) (i) An area of land at high altitude is cooler than an area of land at low altitude. Suggest and explain how this difference in temperature might affect the growth of tea plants. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
9 *P42862A0932* Turn over (ii) Give two factors, other than temperature, that could affect the growth of tea plants. (2) 1................................................................................................................................................................................................................................................................................ 2................................................................................................................................................................................................................................................................................ (c) Describe how the tea grower could use a quadrat to estimate the total mass of tea plants growing in a large area of land. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 3 = 10 marks)
10 *P42862A01032* 4 The diagram shows stages in the cloning process that produced Dolly the sheep. (a) The table lists three events that take place in the cloning process that produced Dolly the sheep. Complete the table by giving the number of the stage when each event takes place. (3) Event Stage number cell division produces an embryo an embryo is put into a surrogate mother an egg cell is collected from a female sheep P Q R S stage 1 donor nucleus stage 2 stage 5 stage 3 stage 4 stage 8 stage 7 stage 6
11 *P42862A01132* Turn over (b) Which sheep in the diagram is Dolly? (1) A P B Q C R D S (c) Which sheep are genetically identical? (1) A P, Q, R and S B P and Q C P and S D P and R (Total for Question 4 = 5 marks)
12 *P42862A01232* 5 Scientists investigated the effect of altitude (height above sea level) on the mass of haemoglobin found in human blood. Blood samples were taken from humans living at different altitudes. The results are shown in the table. Altitude in metres Average mass of haemoglobin in grams per litre 0 121 500 121 1000 121 1500 125 2000 128 2500 133 3000 140 (a) (i) Plot a graph on the grid to show how the average mass of haemoglobin changes with altitude. Use a ruler to join the points with straight lines. (5)
13 *P42862A01332* Turn over (ii) Use the graph to describe how altitude affects the mass of haemoglobin in human blood. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (iii) Suggest why a long distance athlete who trains at high altitude may have a better chance of winning than a long distance athlete who trains at sea level. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
14 *P42862A01432* (b) Scientists obtain blood samples from an athlete’s vein. To do this they use a sterile needle attached to a syringe. (i) Suggest two reasons why scientists obtain blood samples from a vein rather than from an artery. (2) 1................................................................................................................................................................................................................................................................................ 2................................................................................................................................................................................................................................................................................ (ii) Suggest one reason why the scientists could not obtain a blood sample from a capillary. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (iii) Suggest why the needle used to obtain a blood sample needs to be sterile. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 5 = 15 marks)
15 *P42862A01532* Turn over BLANK PAGE
16 *P42862A01632* 6 Cystic fibrosis is an inherited condition. It is caused by a recessive allele (d). The non-cystic fibrosis allele is dominant (D). The diagram shows how cystic fibrosis was inherited in a family. key homozygous dominant female heterozygous female homozygous recessive female homozygous dominant male heterozygous male homozygous recessive male (a) Use letters D and d to give the genotype of person A and person L in the table. (2) Person Genotype A L A B C D E F G H I J K L
17 *P42862A01732* Turn over (b) How many people in this family do not have cystic fibrosis? (1) .................................................................................................................................................................................................................................................................................... (c) (i) Complete the table to show the probability of each set of people having a child with cystic fibrosis. One has been done for you. (2) People Probability as a % C and D E and F 25 G and H (ii) Parents E and F have four children. None of them have cystic fibrosis although the probability shown in the table is 25%. Suggest why they did not have a child with cystic fibrosis. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 6 = 6 marks)
18 *P42862A01832* 7 Aphids are insect pests. They feed on broad bean plants. The aphids can be controlled by lacewing larvae. Photographer: Joaquim Alves Gaspar, May 2010 (a) Use this information to draw a food chain in the space below. (2)
19 *P42862A01932* Turn over (b) A student wanted to compare the ability of two different species of predator, lacewings and hoverflies, to control aphids. Lacewings were released, on day 0, into one field of broad beans (field X), and hoverflies were released into a different field of broad beans (field Y). The table shows his results. Field X Field Y Time in days Number of individuals per m2 Time in days Number of individuals per m2 aphids lacewings aphids hoverflies 0 762 22 0 752 22 3 770 112 3 740 112 6 768 180 6 470 240 9 770 260 9 90 230 12 520 260 12 2 120 15 30 255 15 40 0 18 0 255 18 240 0 Use information in the table to answer the following questions. (i) Suggest two reasons why lacewings might be better predators to use to control aphids than hoverflies. (2) 1................................................................................................................................................................................................................................................................................ 2................................................................................................................................................................................................................................................................................ (ii) Suggest one reason why hoverflies might be better predators to use to control aphids than lacewings. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
20 *P42862A02032* (c) (i) Other than predation, name two biotic (living) factors that may affect aphid numbers. (2) 1................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... 2................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... (ii) Name two abiotic (non-living) factors that may affect aphid numbers. (2) 1................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... 2................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... (Total for Question 7 = 9 marks)
21 *P42862A02132* Turn over 8 The passage describes cell division and reproduction in humans. Complete the passage by writing a suitable word or words in each of the spaces. Fully grown adults can produce sex cells or ................................................................... called sperm and eggs. The .................................................................... cells are much smaller than the .................................................................... cells and have a powerful .................................................................... to enable them to swim. The cell division used to make sex cells is called .................................................................... and in males this takes place in the .................................................................... . The sperm cells pass out of the male along a tube called the .................................................................... and into the female’s body, then through the cervix and into the .................................................................... in which fertilisation takes place. (Total for Question 8 = 8 marks)
22 *P42862A02232* 9 (a) Antibiotics are chemicals used to kill pathogens that cause infections. (i) Name the type of organism that make antibiotics. (1) .................................................................................................................................................................................................................................................................................... (ii) Name the type of pathogen that is killed by antibiotics. (1) .................................................................................................................................................................................................................................................................................... (b) Some antibiotics are no longer effective in killing pathogens. Use your knowledge of natural selection to explain why. (5) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 9 = 7 marks)
23 *P42862A02332* Turn over BLANK PAGE
24 *P42862A02432* 10 A pyramid of numbers can be used to show the number of organisms at each trophic level in an ecosystem. (a) Explain what is meant by the term trophic level. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) A scientist collected data from a local ecosystem. Number of nettle plants = 300 Number of robins that feed on the caterpillars = 20 Number of caterpillars that feed on the nettles = 200 Number of hawks that feed on robins = 2 Draw and label a pyramid of numbers for this data. (3)
25 *P42862A02532* Turn over (c) The scientist collected this data during the summer months. Suggest why the number of the caterpillars might be different during the winter. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (d) The total mass of the organisms at each level in the pyramid decreases as you move up the pyramid. Explain why. (4) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 10 = 10 marks)
26 *P42862A02632* 11 (a) The human kidney acts as an organ of excretion and an organ of osmoregulation. (i) What is meant by the term osmoregulation? (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (ii) Name one other organ in the human body that is an organ of excretion. (1) .................................................................................................................................................................................................................................................................................... (b) The table shows the concentration of two substances in blood plasma and in urine. Substance Concentration of each substance in grams per 100cm3 Blood plasma Urine proteins 8.0 0.0 glucose 0.1 0.0 (i) Name one substance that is found in urine. (1) .................................................................................................................................................................................................................................................................................... (ii) Explain how the kidney ensures that there is no protein in urine. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
27 *P42862A02732* Turn over (iii) Explain why the body does not excrete glucose and how this is achieved by the kidney. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 11 = 9 marks)
28 *P42862A02832* 12 (a) Explain how plants absorb water from the soil and transport the water to their leaves. (4) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) Some useful substances are dissolved in the water that is taken up by plants. Name one of these substances. (1) .................................................................................................................................................................................................................................................................................... (c) This apparatus can be used to investigate the rate of water uptake by a leafy shoot. rubber tube capillary tube air bubble water leafy shoot ⎫ ⎬ ⎪ ⎪ ⎭ ⎪ ⎪
29 *P42862A02932* Turn over (i) Describe one precaution you would take when setting up this apparatus. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (ii) Give two environmental conditions you could vary in the laboratory when investigating the rate of water uptake by a leafy shoot. For each condition describe how you could obtain a range of different values. (4) Condition ....................................................................................................................................................................................................................................................... How I could obtain a range of different values ...................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... Condition ....................................................................................................................................................................................................................................................... How I could obtain a range of different values ...................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 12 = 10 marks)
30 *P42862A03032* 13 Human insulin can be made by genetically modified bacteria. (a) (i) Name the small circle of DNA that is genetically modified in bacteria. (1) .................................................................................................................................................................................................................................................................................... (ii) Name two enzymes that are used to genetically modify the DNA of the bacteria. (2) 1 ............................................................................................................................................................................................................................................................................... 2 ...............................................................................................................................................................................................................................................................................
31 *P42862A03132* (b) To produce large amounts of human insulin the genetically modified bacteria are grown in a fermenter. Describe an investigation to find out if temperature affects the amount of insulin made by genetically modified bacteria. Your answer should include experimental details and be written in full sentences and paragraphs. (6) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 13 = 9 marks) TOTAL FOR PAPER = 120 MARKS
32 *P42862A03232* BLANK PAGE

More Related Content

PDF
4 bi0 1br_que_20140519
byAnneRostom
 
PDF
4 ch0 2c_que_20140610
byAnneRostom
 
PDF
4 ch0 1cr_que_20140513
byAnneRostom
 
PDF
167460 2016-specimen-paper-4
byOmniya Jay
 
PDF
4 bi0 1b_que_20150107
byAnneRostom
 
PDF
0610 s15 qp_33
byOmniya Jay
 
PDF
4 bi0 2b_que_20140616_2
byAnneRostom
 
PDF
0610_s14_qp_33
byKing Ali
 
4 bi0 1br_que_20140519
byAnneRostom
 
4 ch0 2c_que_20140610
byAnneRostom
 
4 ch0 1cr_que_20140513
byAnneRostom
 
167460 2016-specimen-paper-4
byOmniya Jay
 
4 bi0 1b_que_20150107
byAnneRostom
 
0610 s15 qp_33
byOmniya Jay
 
4 bi0 2b_que_20140616_2
byAnneRostom
 
0610_s14_qp_33
byKing Ali
 

What's hot

PDF
0610 w16 qp_41
byOmniya Jay
 
PDF
Maths 2008 PNEB (PUNTLAND NATIONAL EXAMINATION BOARD)
byEng.Abdulahi hajji
 
PDF
0625 s04 qp_6
byKing Ali
 
PDF
0500 y20 sp_1
byAlish Revi
 
PDF
5125_w03_qp_04
byKing Ali
 
PDF
0610_s02_qp_6
byKing Ali
 
PDF
0610 s14 qp_32
byOmniya Jay
 
PDF
5090 s07 qp_2
byKing Ali
 
PDF
0620 s16 qp_43
byOmniya Jay
 
PDF
0620 w16 qp_41
byOmniya Jay
 
PDF
0610 s15 qp_32
byOmniya Jay
 
PDF
0610_s04_qp_3
byKing Ali
 
PDF
0610 s15 qp_31
byOmniya Jay
 
DOC
BIOLOGY 2006 PNEB (PUNTLAND NATIONAL EXAMINATION BOARD)
byEng.Abdulahi hajji
 
DOCX
G 10 bio-paper 6 final - copy
byJithesh Parambath
 
PDF
0610 w04 qp_6
byKing Ali
 
PDF
0620 w16 qp_43
byOmniya Jay
 
0610 w16 qp_41
byOmniya Jay
 
Maths 2008 PNEB (PUNTLAND NATIONAL EXAMINATION BOARD)
byEng.Abdulahi hajji
 
0625 s04 qp_6
byKing Ali
 
0500 y20 sp_1
byAlish Revi
 
5125_w03_qp_04
byKing Ali
 
0610_s02_qp_6
byKing Ali
 
0610 s14 qp_32
byOmniya Jay
 
5090 s07 qp_2
byKing Ali
 
0620 s16 qp_43
byOmniya Jay
 
0620 w16 qp_41
byOmniya Jay
 
0610 s15 qp_32
byOmniya Jay
 
0610_s04_qp_3
byKing Ali
 
0610 s15 qp_31
byOmniya Jay
 
BIOLOGY 2006 PNEB (PUNTLAND NATIONAL EXAMINATION BOARD)
byEng.Abdulahi hajji
 
G 10 bio-paper 6 final - copy
byJithesh Parambath
 
0610 w04 qp_6
byKing Ali
 
0620 w16 qp_43
byOmniya Jay
 

Viewers also liked

PDF
4 bi0 1b_que_20140519
byAnneRostom
 
PDF
4 bi0 1br_que_20140519
byAnneRostom
 
PDF
D&J AUTO LOCK QUICK HITCH-HOW IT WORKS
byDhanushka Ariyarathna
 
PDF
4 bi0 2br_que_20140616
byAnneRostom
 
PDF
4 bi0 2b_que_20150108
byAnneRostom
 
PDF
4 bi0 1br_msc_20140821
byAnneRostom
 
PDF
4 ph0 1p_msc_20151501
byAnneRostom
 
PDF
4 ar0 02_msc_20140821
byAnneRostom
 
PDF
4 ar0 02_msc_20150305
byAnneRostom
 
PDF
Hatch Year End Report 2014-15
byFahd Alhattab
 
DOCX
Menginstall Kuliax menggunakan VMWARE
byMuhammad Syidik
 
PDF
4 ch0 2cr_que_20140610
byAnneRostom
 
PDF
4 bi0 1b_msc_20151501
byAnneRostom
 
PDF
4 ph0 2p_msc_20140821
byAnneRostom
 
PDF
4 ph0 1p_msc_20151501
byAnneRostom
 
PDF
4 bi0 1b_msc_20140821
byAnneRostom
 
PDF
4 bi0 1b_msc_20140821
byAnneRostom
 
PPTX
Actividades del sena
byyuliehtKaren
 
PPTX
Bethany kludt: Nursing Facts
byBethany Kludt
 
PDF
AppleWatch_Presentation
byRuptapas Chakraborty
 
4 bi0 1b_que_20140519
byAnneRostom
 
4 bi0 1br_que_20140519
byAnneRostom
 
D&J AUTO LOCK QUICK HITCH-HOW IT WORKS
byDhanushka Ariyarathna
 
4 bi0 2br_que_20140616
byAnneRostom
 
4 bi0 2b_que_20150108
byAnneRostom
 
4 bi0 1br_msc_20140821
byAnneRostom
 
4 ph0 1p_msc_20151501
byAnneRostom
 
4 ar0 02_msc_20140821
byAnneRostom
 
4 ar0 02_msc_20150305
byAnneRostom
 
Hatch Year End Report 2014-15
byFahd Alhattab
 
Menginstall Kuliax menggunakan VMWARE
byMuhammad Syidik
 
4 ch0 2cr_que_20140610
byAnneRostom
 
4 bi0 1b_msc_20151501
byAnneRostom
 
4 ph0 2p_msc_20140821
byAnneRostom
 
4 ph0 1p_msc_20151501
byAnneRostom
 
4 bi0 1b_msc_20140821
byAnneRostom
 
4 bi0 1b_msc_20140821
byAnneRostom
 
Actividades del sena
byyuliehtKaren
 
Bethany kludt: Nursing Facts
byBethany Kludt
 
AppleWatch_Presentation
byRuptapas Chakraborty
 

Similar to 4 bi0 1b_que_20140519

PPTX
IGCSE Biology Edexcel (9-1) Biological molecules
byssnm88
 
PDF
Revisions checklist for_igcse_biology_0610_final
byJithesh Parambath
 
PDF
Revisions checklist for_igcse_biology_0610_final - copy
byJithesh Parambath
 
PPTX
Conquering the TEAS Part 4: Science
byLynn Bahena
 
PPTX
Aqa digestive system tmid
byTeresa Middleton
 
RTF
Food tests exam questions and mark scheme
bykedstbio
 
PDF
0610 w15 qp_63
byOmniya Jay
 
PDF
9700 w09 qp_33
byKing Ali
 
PDF
4 bi0 2b_msc_20151501
byAnneRostom
 
PDF
4 bi0 2b_msc_20140821
byAnneRostom
 
PDF
0610 s08 qp_3
byKing Ali
 
PDF
0610 w13 ms_31
byKing Ali
 
PDF
Animal nutrition 1 (a.pdf
byCarmen Pell
 
DOCX
Formative Assessment 1_Y3_Science.docx
byGirl881
 
DOCX
COT Feb 19, 2025 DLLgvbbnnjjjjjj_Digestive System and its Functions_PISA_CBA....
bykayemorales1105
 
DOC
What is food test
byTre Briercliffe
 
DOCX
Nutrition
byNursabiha Che Mazlan
 
PDF
4 bi0 2b_msc_20140821
byAnneRostom
 
PDF
GCSE-BIOL-Coursework-Forms-13865.pdf
byaswwadsd
 
DOC
T2 bab 9
bySyahar Osman
 
IGCSE Biology Edexcel (9-1) Biological molecules
byssnm88
 
Revisions checklist for_igcse_biology_0610_final
byJithesh Parambath
 
Revisions checklist for_igcse_biology_0610_final - copy
byJithesh Parambath
 
Conquering the TEAS Part 4: Science
byLynn Bahena
 
Aqa digestive system tmid
byTeresa Middleton
 
Food tests exam questions and mark scheme
bykedstbio
 
0610 w15 qp_63
byOmniya Jay
 
9700 w09 qp_33
byKing Ali
 
4 bi0 2b_msc_20151501
byAnneRostom
 
4 bi0 2b_msc_20140821
byAnneRostom
 
0610 s08 qp_3
byKing Ali
 
0610 w13 ms_31
byKing Ali
 
Animal nutrition 1 (a.pdf
byCarmen Pell
 
Formative Assessment 1_Y3_Science.docx
byGirl881
 
COT Feb 19, 2025 DLLgvbbnnjjjjjj_Digestive System and its Functions_PISA_CBA....
bykayemorales1105
 
What is food test
byTre Briercliffe
 
Nutrition
byNursabiha Che Mazlan
 
4 bi0 2b_msc_20140821
byAnneRostom
 
GCSE-BIOL-Coursework-Forms-13865.pdf
byaswwadsd
 
T2 bab 9
bySyahar Osman
 

More from AnneRostom

PDF
4 ph0 2pr_que_20140612
byAnneRostom
 
PDF
4 ph0 2p_que_20140612
byAnneRostom
 
PDF
4 ph0 1p_que_20150114
byAnneRostom
 
PDF
4 ph0 1pr_que_20140515
byAnneRostom
 
PDF
4 ph0 2p_que_20150115
byAnneRostom
 
PDF
4 ph0 2p_que_20150115
byAnneRostom
 
PDF
Arabic02
byAnneRostom
 
PDF
Arabic01
byAnneRostom
 
PDF
4 ar0 01_msc_20140821
byAnneRostom
 
PDF
4 ph0 1pr_msc_20140821
byAnneRostom
 
PDF
4 ar0 02_que_20150120
byAnneRostom
 
PDF
4 ar0 01_msc_20140821
byAnneRostom
 
PDF
4 ph0 2p_msc_20151501
byAnneRostom
 
PDF
4 ph0 2p_msc_20151501
byAnneRostom
 
PDF
4 ar0 01_msc_20150305
byAnneRostom
 
PDF
4 ar0 01_que_20150114
byAnneRostom
 
PDF
4 ar0 02_msc_20140821
byAnneRostom
 
PDF
4 ph0 1p_msc_20140821
byAnneRostom
 
PDF
4 ph0 1p_msc_20151501
byAnneRostom
 
PDF
4 ph0 2pr_msc_20140821
byAnneRostom
 
4 ph0 2pr_que_20140612
byAnneRostom
 
4 ph0 2p_que_20140612
byAnneRostom
 
4 ph0 1p_que_20150114
byAnneRostom
 
4 ph0 1pr_que_20140515
byAnneRostom
 
4 ph0 2p_que_20150115
byAnneRostom
 
4 ph0 2p_que_20150115
byAnneRostom
 
Arabic02
byAnneRostom
 
Arabic01
byAnneRostom
 
4 ar0 01_msc_20140821
byAnneRostom
 
4 ph0 1pr_msc_20140821
byAnneRostom
 
4 ar0 02_que_20150120
byAnneRostom
 
4 ar0 01_msc_20140821
byAnneRostom
 
4 ph0 2p_msc_20151501
byAnneRostom
 
4 ph0 2p_msc_20151501
byAnneRostom
 
4 ar0 01_msc_20150305
byAnneRostom
 
4 ar0 01_que_20150114
byAnneRostom
 
4 ar0 02_msc_20140821
byAnneRostom
 
4 ph0 1p_msc_20140821
byAnneRostom
 
4 ph0 1p_msc_20151501
byAnneRostom
 
4 ph0 2pr_msc_20140821
byAnneRostom
 

4 bi0 1b_que_20140519

  • 1.
    Centre Number CandidateNumber Write your name here Surname Other names Total Marks Paper Reference Turn over P42862A ©2014 Pearson Education Ltd. 1/1/1/1/1/ *P42862A0132* Biology Unit: KBI0/4BI0 Science (Double Award) KSC0/4SC0 Paper: 1B Monday 19 May 2014 – Afternoon Time: 2 hours You must have: Ruler Calculator Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name, centre number and candidate number. Answer all questions. Answer the questions in the spaces provided – there may be more space than you need. Show all the steps in any calculations and state the units. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . Information The total mark for this paper is 120. The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. Advice Read each question carefully before you start to answer it. Keep an eye on the time. Write your answers neatly and in good English. Try to answer every question. Check your answers if you have time at the end. Pearson Edexcel Certificate Pearson Edexcel International GCSE KBI0/1B 4BI0/1B KSC0/1B 4SC0/1B
  • 2.
    2 *P42862A0232* Answer ALL questions. 1(a) The table contains names and descriptions of processes involved in the digestive system. Complete the table by filling in the missing names and descriptions. (5) Name of process Description of process food enters the mouth digestion small food molecules move from the small intestine into the blood small food molecules are used to build large molecules egestion
  • 3.
    3 *P42862A0332* Turn over (b)Describe the process of digestion in the mouth. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (c) A student carried out some food tests on two samples of food, A and B. The table shows the results. Sample Reagent used in food test Colour seen after adding the reagent A iodine solution blue black B Benedict’s brick red The student concluded that both samples of food contained carbohydrates. Do you agree with this conclusion? Give reasons for your answer. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 1 = 10 marks)
  • 4.
    4 *P42862A0432* 2 The tableshows the number of deaths in the United Kingdom in 2010 caused by cancer, lung diseases and circulatory diseases. The table also shows the number of these deaths caused by smoking. Cause of death Total number of deaths Number of these deaths caused by smoking cancer 66 000 38 000 lung diseases 46 000 22 000 circulatory diseases 138 000 20 000 (a) (i) What is the total number of deaths caused by all three diseases? (1) .................................................................................................................................................................................................................................................................................... (ii) Calculate the percentage of the total number of deaths that are caused by smoking. Show your working. (2) percentage ............................................................................... % (b) Chemicals in cigarette smoke cause mutations in cells which can lead to cancer. What is meant by the term mutation? (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
  • 5.
    5 *P42862A0532* Turn over (c)Emphysema is a lung disease that is usually caused by smoking. The diagram shows a cross section through two alveoli X and Y. Alveolus X is from a non-smoker and alveolus Y is from a smoker suffering from emphysema. X Y Use the diagram to suggest and explain the effect of emphysema on gas exchange. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
  • 6.
    6 *P42862A0632* (d) Smoking canincrease the risk of developing coronary heart disease. Explain how coronary heart disease can cause death. (5) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 2 = 12 marks)
  • 7.
  • 8.
    8 *P42862A0832* 3 The tableshows the area of land used, in hectares, to grow tea plants at different altitudes (height above sea level) in Sri Lanka between the years 1990–2000. Area of land used in hectares Year High altitude Medium altitude Low altitude Total 1990 73 138 83 223 65 397 221 758 1992 74 141 85 510 62 185 221 836 1994 51 443 56 155 79 711 187 309 1996 52 272 56 863 79 836 188 971 1998 51 444 58 155 79 711 189 310 2000 52 272 56 863 79 836 188 971 (a) Describe the changes that have taken place in the area of land used to grow tea plants between 1990 and 2000. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) (i) An area of land at high altitude is cooler than an area of land at low altitude. Suggest and explain how this difference in temperature might affect the growth of tea plants. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
  • 9.
    9 *P42862A0932* Turn over (ii)Give two factors, other than temperature, that could affect the growth of tea plants. (2) 1................................................................................................................................................................................................................................................................................ 2................................................................................................................................................................................................................................................................................ (c) Describe how the tea grower could use a quadrat to estimate the total mass of tea plants growing in a large area of land. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 3 = 10 marks)
  • 10.
    10 *P42862A01032* 4 The diagramshows stages in the cloning process that produced Dolly the sheep. (a) The table lists three events that take place in the cloning process that produced Dolly the sheep. Complete the table by giving the number of the stage when each event takes place. (3) Event Stage number cell division produces an embryo an embryo is put into a surrogate mother an egg cell is collected from a female sheep P Q R S stage 1 donor nucleus stage 2 stage 5 stage 3 stage 4 stage 8 stage 7 stage 6
  • 11.
    11 *P42862A01132* Turn over (b)Which sheep in the diagram is Dolly? (1) A P B Q C R D S (c) Which sheep are genetically identical? (1) A P, Q, R and S B P and Q C P and S D P and R (Total for Question 4 = 5 marks)
  • 12.
    12 *P42862A01232* 5 Scientists investigatedthe effect of altitude (height above sea level) on the mass of haemoglobin found in human blood. Blood samples were taken from humans living at different altitudes. The results are shown in the table. Altitude in metres Average mass of haemoglobin in grams per litre 0 121 500 121 1000 121 1500 125 2000 128 2500 133 3000 140 (a) (i) Plot a graph on the grid to show how the average mass of haemoglobin changes with altitude. Use a ruler to join the points with straight lines. (5)
  • 13.
    13 *P42862A01332* Turn over (ii)Use the graph to describe how altitude affects the mass of haemoglobin in human blood. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (iii) Suggest why a long distance athlete who trains at high altitude may have a better chance of winning than a long distance athlete who trains at sea level. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
  • 14.
    14 *P42862A01432* (b) Scientists obtainblood samples from an athlete’s vein. To do this they use a sterile needle attached to a syringe. (i) Suggest two reasons why scientists obtain blood samples from a vein rather than from an artery. (2) 1................................................................................................................................................................................................................................................................................ 2................................................................................................................................................................................................................................................................................ (ii) Suggest one reason why the scientists could not obtain a blood sample from a capillary. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (iii) Suggest why the needle used to obtain a blood sample needs to be sterile. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 5 = 15 marks)
  • 15.
  • 16.
    16 *P42862A01632* 6 Cystic fibrosisis an inherited condition. It is caused by a recessive allele (d). The non-cystic fibrosis allele is dominant (D). The diagram shows how cystic fibrosis was inherited in a family. key homozygous dominant female heterozygous female homozygous recessive female homozygous dominant male heterozygous male homozygous recessive male (a) Use letters D and d to give the genotype of person A and person L in the table. (2) Person Genotype A L A B C D E F G H I J K L
  • 17.
    17 *P42862A01732* Turn over (b)How many people in this family do not have cystic fibrosis? (1) .................................................................................................................................................................................................................................................................................... (c) (i) Complete the table to show the probability of each set of people having a child with cystic fibrosis. One has been done for you. (2) People Probability as a % C and D E and F 25 G and H (ii) Parents E and F have four children. None of them have cystic fibrosis although the probability shown in the table is 25%. Suggest why they did not have a child with cystic fibrosis. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 6 = 6 marks)
  • 18.
    18 *P42862A01832* 7 Aphids areinsect pests. They feed on broad bean plants. The aphids can be controlled by lacewing larvae. Photographer: Joaquim Alves Gaspar, May 2010 (a) Use this information to draw a food chain in the space below. (2)
  • 19.
    19 *P42862A01932* Turn over (b)A student wanted to compare the ability of two different species of predator, lacewings and hoverflies, to control aphids. Lacewings were released, on day 0, into one field of broad beans (field X), and hoverflies were released into a different field of broad beans (field Y). The table shows his results. Field X Field Y Time in days Number of individuals per m2 Time in days Number of individuals per m2 aphids lacewings aphids hoverflies 0 762 22 0 752 22 3 770 112 3 740 112 6 768 180 6 470 240 9 770 260 9 90 230 12 520 260 12 2 120 15 30 255 15 40 0 18 0 255 18 240 0 Use information in the table to answer the following questions. (i) Suggest two reasons why lacewings might be better predators to use to control aphids than hoverflies. (2) 1................................................................................................................................................................................................................................................................................ 2................................................................................................................................................................................................................................................................................ (ii) Suggest one reason why hoverflies might be better predators to use to control aphids than lacewings. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
  • 20.
    20 *P42862A02032* (c) (i) Otherthan predation, name two biotic (living) factors that may affect aphid numbers. (2) 1................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... 2................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... (ii) Name two abiotic (non-living) factors that may affect aphid numbers. (2) 1................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... 2................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... (Total for Question 7 = 9 marks)
  • 21.
    21 *P42862A02132* Turn over 8The passage describes cell division and reproduction in humans. Complete the passage by writing a suitable word or words in each of the spaces. Fully grown adults can produce sex cells or ................................................................... called sperm and eggs. The .................................................................... cells are much smaller than the .................................................................... cells and have a powerful .................................................................... to enable them to swim. The cell division used to make sex cells is called .................................................................... and in males this takes place in the .................................................................... . The sperm cells pass out of the male along a tube called the .................................................................... and into the female’s body, then through the cervix and into the .................................................................... in which fertilisation takes place. (Total for Question 8 = 8 marks)
  • 22.
    22 *P42862A02232* 9 (a) Antibioticsare chemicals used to kill pathogens that cause infections. (i) Name the type of organism that make antibiotics. (1) .................................................................................................................................................................................................................................................................................... (ii) Name the type of pathogen that is killed by antibiotics. (1) .................................................................................................................................................................................................................................................................................... (b) Some antibiotics are no longer effective in killing pathogens. Use your knowledge of natural selection to explain why. (5) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 9 = 7 marks)
  • 23.
  • 24.
    24 *P42862A02432* 10 A pyramidof numbers can be used to show the number of organisms at each trophic level in an ecosystem. (a) Explain what is meant by the term trophic level. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) A scientist collected data from a local ecosystem. Number of nettle plants = 300 Number of robins that feed on the caterpillars = 20 Number of caterpillars that feed on the nettles = 200 Number of hawks that feed on robins = 2 Draw and label a pyramid of numbers for this data. (3)
  • 25.
    25 *P42862A02532* Turn over (c)The scientist collected this data during the summer months. Suggest why the number of the caterpillars might be different during the winter. (2) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (d) The total mass of the organisms at each level in the pyramid decreases as you move up the pyramid. Explain why. (4) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 10 = 10 marks)
  • 26.
    26 *P42862A02632* 11 (a) Thehuman kidney acts as an organ of excretion and an organ of osmoregulation. (i) What is meant by the term osmoregulation? (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (ii) Name one other organ in the human body that is an organ of excretion. (1) .................................................................................................................................................................................................................................................................................... (b) The table shows the concentration of two substances in blood plasma and in urine. Substance Concentration of each substance in grams per 100cm3 Blood plasma Urine proteins 8.0 0.0 glucose 0.1 0.0 (i) Name one substance that is found in urine. (1) .................................................................................................................................................................................................................................................................................... (ii) Explain how the kidney ensures that there is no protein in urine. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................
  • 27.
    27 *P42862A02732* Turn over (iii)Explain why the body does not excrete glucose and how this is achieved by the kidney. (3) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 11 = 9 marks)
  • 28.
    28 *P42862A02832* 12 (a) Explainhow plants absorb water from the soil and transport the water to their leaves. (4) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (b) Some useful substances are dissolved in the water that is taken up by plants. Name one of these substances. (1) .................................................................................................................................................................................................................................................................................... (c) This apparatus can be used to investigate the rate of water uptake by a leafy shoot. rubber tube capillary tube air bubble water leafy shoot ⎫ ⎬ ⎪ ⎪ ⎭ ⎪ ⎪
  • 29.
    29 *P42862A02932* Turn over (i)Describe one precaution you would take when setting up this apparatus. (1) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (ii) Give two environmental conditions you could vary in the laboratory when investigating the rate of water uptake by a leafy shoot. For each condition describe how you could obtain a range of different values. (4) Condition ....................................................................................................................................................................................................................................................... How I could obtain a range of different values ...................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... Condition ....................................................................................................................................................................................................................................................... How I could obtain a range of different values ...................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 12 = 10 marks)
  • 30.
    30 *P42862A03032* 13 Human insulincan be made by genetically modified bacteria. (a) (i) Name the small circle of DNA that is genetically modified in bacteria. (1) .................................................................................................................................................................................................................................................................................... (ii) Name two enzymes that are used to genetically modify the DNA of the bacteria. (2) 1 ............................................................................................................................................................................................................................................................................... 2 ...............................................................................................................................................................................................................................................................................
  • 31.
    31 *P42862A03132* (b) To producelarge amounts of human insulin the genetically modified bacteria are grown in a fermenter. Describe an investigation to find out if temperature affects the amount of insulin made by genetically modified bacteria. Your answer should include experimental details and be written in full sentences and paragraphs. (6) .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 13 = 9 marks) TOTAL FOR PAPER = 120 MARKS
  • 32.