This document provides information about the format and structure of the Biology paper for the SPM examination in Malaysia. It includes three papers that assess different skills:
Paper 1 is objective testing with multiple choice questions. It has 50 questions worth 50 marks in 1 hour 15 minutes.
Paper 2 involves subjective questions including structured and essay questions. It is worth 100 marks over 2 hours 30 minutes and tests a range of skills.
Paper 3 also uses subjective questions like structured response and essays. It focuses on scientific process skills and is worth 50 marks over 1 hour 30 minutes.
1BIOLOGY 101 Fall 2016FINAL EXAMINATIONPlease copy and.docxfelicidaddinwoodie
1
BIOLOGY 101 Fall 2016
FINAL EXAMINATION
Please copy and paste the final examination into a Word file. Complete it in this form (do not make any structural changes!) and submit it as an attachment into your Assignment Folder.Do not forget to put your name on top of the exam!
The absolute deadline for submission is Sunday, October 16, NOON ET.
I cannot accept any later submissions.
YOUR NAME:
_______________________________________________________________
Total possible points: 100
I. Multiple choice questions. Please bold or underline the correct answer (1point each=50 points)
1. Several features, or properties, of living things may also be found in non-living things, such as fire. Of the following, which is the least likely to be found in non-living things?
A. Consumption of energy-containing molecules
B. Growth
C. Reproduction
D. Homeostasis
E. Response to external stimuli
2. Suppose you conduct an experiment which simulates glacial recession over time. What is the dependent variable in this experiment?
A. Glacial mass
B. Sunlight
C. The season
D. Time
3. If life on another planet were fundamentally like life on Earth, the macromolecules of living things would be based on which element?
A. Carbon
B. Hydrogen
C. Nitrogen
D. Oxygen
E. Phosphorus
4. The effectiveness of a medication containing growth hormones is tested on a group of young male rabbits 3 weeks of age. The best control group would be:
A. Any group of rabbits
B. A group of male rabbits, three weeks old, not given the medication
C. A group of female rabbits, three weeks old, not given the medication
D. A mixed group of male/female rabbits, three weeks old, not given the medication
E. No control is required; just measure whether the rabbits grew
5. Temperature is a measure of
A. The potential energy in a substance
B. How fast the molecule in a substance are moving
C. The energy lost from a substance to its surroundings.
D. How much heat is being absorbed by a substance
E. All of the above
6. Which of the following refers to a substance that has ‘lost’ a carbon dioxide molecule?
A. Denatured
B. Phosphorilated
C. Decarboxylated
D. Carbonated
E. Oxidated
7. Which of the following reactions or pathways is catabolic?
A. Converting glucose to carbon dioxide and water (cellular respiration)
B. Making starch from many glucose monomers
C. Photosynthesis, which builds glucose from carbon dioxide using energy from light
D. Making ATP from ADP and phosphate
8. One human disease is caused by a change in the DNA from GAA to GUA. This change is an example of:
A. Crossing-over
B. A meiosis error
C. A mitosis error
D. A mutation
9. During which part of the cell cycle is DNA polymerase most active?
A. Cytokinesis
B. G1 phase
C. G2 phase
D. S phase
E. M phase
10. Which of the following correctly describes a buffer?
A. A buffer converts an alkaline solution to neutral
B. A buffer converts an acid solution to neutral.
C. A buffer converts alkaline solutions to acid solutions.
D. A b ...
1BIOLOGY 101 Fall 2016FINAL EXAMINATIONPlease copy and.docxfelicidaddinwoodie
1
BIOLOGY 101 Fall 2016
FINAL EXAMINATION
Please copy and paste the final examination into a Word file. Complete it in this form (do not make any structural changes!) and submit it as an attachment into your Assignment Folder.Do not forget to put your name on top of the exam!
The absolute deadline for submission is Sunday, October 16, NOON ET.
I cannot accept any later submissions.
YOUR NAME:
_______________________________________________________________
Total possible points: 100
I. Multiple choice questions. Please bold or underline the correct answer (1point each=50 points)
1. Several features, or properties, of living things may also be found in non-living things, such as fire. Of the following, which is the least likely to be found in non-living things?
A. Consumption of energy-containing molecules
B. Growth
C. Reproduction
D. Homeostasis
E. Response to external stimuli
2. Suppose you conduct an experiment which simulates glacial recession over time. What is the dependent variable in this experiment?
A. Glacial mass
B. Sunlight
C. The season
D. Time
3. If life on another planet were fundamentally like life on Earth, the macromolecules of living things would be based on which element?
A. Carbon
B. Hydrogen
C. Nitrogen
D. Oxygen
E. Phosphorus
4. The effectiveness of a medication containing growth hormones is tested on a group of young male rabbits 3 weeks of age. The best control group would be:
A. Any group of rabbits
B. A group of male rabbits, three weeks old, not given the medication
C. A group of female rabbits, three weeks old, not given the medication
D. A mixed group of male/female rabbits, three weeks old, not given the medication
E. No control is required; just measure whether the rabbits grew
5. Temperature is a measure of
A. The potential energy in a substance
B. How fast the molecule in a substance are moving
C. The energy lost from a substance to its surroundings.
D. How much heat is being absorbed by a substance
E. All of the above
6. Which of the following refers to a substance that has ‘lost’ a carbon dioxide molecule?
A. Denatured
B. Phosphorilated
C. Decarboxylated
D. Carbonated
E. Oxidated
7. Which of the following reactions or pathways is catabolic?
A. Converting glucose to carbon dioxide and water (cellular respiration)
B. Making starch from many glucose monomers
C. Photosynthesis, which builds glucose from carbon dioxide using energy from light
D. Making ATP from ADP and phosphate
8. One human disease is caused by a change in the DNA from GAA to GUA. This change is an example of:
A. Crossing-over
B. A meiosis error
C. A mitosis error
D. A mutation
9. During which part of the cell cycle is DNA polymerase most active?
A. Cytokinesis
B. G1 phase
C. G2 phase
D. S phase
E. M phase
10. Which of the following correctly describes a buffer?
A. A buffer converts an alkaline solution to neutral
B. A buffer converts an acid solution to neutral.
C. A buffer converts alkaline solutions to acid solutions.
D. A b ...
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Digital Tools and AI for Teaching Learning and Research
Biok1k1tr2007times
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BIOLOGY
Format of Biology Paper
SPM Level
Aspect
Paper
Types of Item
Number of questions
Total marks
Duration of test
Requirement of
construct
Marking
Level of difficulty :
Low : L : 50%
Moderate : M : 30%
High : H : 20%
Paper 1
4551/1
Objective Items :
• Multiple-choice
• Multiple-combination
Each item consists of four
opinions: A, B, C and D.
50 questions. Answer all
50 marks
1 hour 15 minutes
Section A :
• Knowledge – 25
Section B :
• Understanding - 15
Section C :
• Application – 10
Dichotomous 1 or 0 mark.
L : M : H
3 : 1 : 1
• 30 easy items
• 10 moderate items
• 10 difficult items
Paper 2
4551/2
Subjective Items :
• Section A : Structured based
items
• Section B : Limited
response items
• Section C : Extended
response items
Section A :
• 5 items - Answer all
Section B :
• 2 items – Choose one
Section C :
• 2 items – Choose one
100 marks
2 hours 30 minutes
Knowledge - 10
Understanding - 20
Application skills - 30
Analysing skills - 15
Synthesising skills - 15
Evaluating skill - 10
Analytical marking based on
rubric scoring.
L : M : H
4 : 4 : 2
• 40 easy scores
• 20 moderate scores
• 20 difficult scores
Paper 3
4551/3
Subjective Items :
• Structured-based items
• Extended response items
Structured item :
• 1 @ 2 items - Answer all
Extended item :
• 1 item – Compulsory
50 marks
1 hour 30 minutes
Scientific Process skills
• 16 aspects with maximum
score of 3
Analytical marking based on
rubric scoring for 3 levels.
L : M : H
3 : 3 : 1
• 10 easy aspect
• 30 moderate aspects
• 30 difficult aspects
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Analysis of Biology Paper
SPM Level
OBJECTIVE
OBJECTIVE
OBJECTIVE
OBJECTIVE
STRUCTURE
ESSAY
STRUCTURE
ESSAY
STRUCTURE
ESSAY
STRUCTURE
ESSAY
P1 P1 P1 P1P2 P2 P2 P2P3 P3 P3 P3
2003 2004 2005 2006
1 Introduction to Biology.
2 Cell structure and cell organisation.
3 Movement of substances across the
plasma membrane.
4 Chemical composition of the cell.
5 Cell division
6 Nutrition
7 Respiration
8 Dynamic ecosystem
9 Endangered ecosystem
10 Transport
11 Support and locomotion
12 Coordination and response
13 Reproduction and growth
14 Inheritance
15 Variation
TOTAL
4
4
5
2
3
2
7
1
6
2
5
3
4
2
50
1
1
1
1
1
5
1
1
1
1
4
1
½
½
2
3
3
4
2
5
2
3
3
8
2
5
4
4
2
50
1
1
1
1
1
5
1
1
1½
½
4
1
1
2
4
4
2
2
6
2
3
3
5
3
5
5
5
1
50
1
1
1
1
1
5
1
1
1
1
4
1
1
2
3
4
3
3
3
3
4
2
5
3
4
5
5
3
50
1
½
½
1
1
1
5
1
2
1
4
1
1
2
TOPICS
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CONTOH KERTAS SOALAN
BIOLOGYBIOLOGYPAPER 1 ONE HOUR FIFTEEN MINUTES
Instructions: Each question is followed by four options.
Choose the best options for each questions.
Diagram below shows a plant cell. What is X?
A. Vacuole C. Mitochondrion
B. Golgi apparatus D. Chloroplast
The process in which the cytoplasm of a plant cell shrinks
due to osmosis is called
A. Plasmolysis C. Crenation
B. Endocytosis D. Flaccid
Enzymes can be denatured by...
A temperature
B substrate
C alkali
D acids
Which of the following plant hormones induce
parthenocarpy?
A Gibberellin C Ethene
B Ethylene D Auxin
CONTOH KERTAS SOALAN
CONTOH KERTAS SOALAN
1.
2.
3.
4.
The diagram shows a fish having difficulty while
swimming. A fish overcomes this difficulty with the help
of its…
I ventral fins
II pelvic fins
III dorsal fins
IV pectoral fins
A I and II only C II and III only
B I and III only D III and IV only
The diagram below shows three types of vertebrae.
What is the correct position of the vertebrae in the
vertebral column below the skull?
A P, R, S C R, S, P
B R, P, S D S, P, R
5.
6.
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Antibiotics would be effective against …
A the flu virus
B viral meningitis
C the malaria protest
D bacterial pneumonia
The diagram shows the human blood cells in the blood
capillaries.
Which of the following cell function as the body’s
defence mechanism?
A P and Q C P and R
B Q and R D P, Q and R
A plant was exposed to radioactive carbon dioxide in
daylight. After two hours, a thin slice of the cross-section
of the stem was cut and placed on photographic film
which turns black if there is radioactive carbon.
Which tissue on the cross-section of the stem in the
diagram above is the fastest to turn black?
What process involves the movement of substances across
membranes with the help of carrier proteins but without
the need for energy ?
A Osmosis C Facilitated diffusion
B Simple diffusion D Active transport
7.
8.
9.
10.
A cell is placed in a hypertonic solution. What will
happen ?
A Solutes will move into the cell from the surrounding
solution.
B Water will move into the cell from the surrounding
solution.
C Solutes will move out of the cell into the surrounding
solution.
D Water will move out of the cell into the surrounding
solution.
The diagram shows a somatic cell of an animal in the
process of meiosis I. How many chromosomes are there
in the daughter cell after cell division?
A 2 C 8
B 4 D 16
In the human digestive system, damage to the pancreas
will affect the digestion of
A proteins C protein and starch
B starch and lipids D lipid, starch and proteins
The diagram below shows the food chain
An insecticide was sprayed to kill organism R. Which of
the following statement is true?
A The number of producer decreases
B The number of organism S increases
C The number of organism S decreases
D No change in the number of producer
11.
12.
13.
14.
Producer Organism R Organism S> >
Cell P
Cell Q
Cell R
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Which of the following shows the variation caused by the
genetic factor?
What is bacteria K involved in the process shown above?
A Rhizobium sp. C Clostridium sp.
B Nitrobacter sp. D Nitrosomonas sp.
Which of the following neuron send impulses from the
receptor to the central nervous system?
15.
16.
17.
Nitrites nitrates in soil>
Bacteria K
The diagram below shows a part of alimentary canal of a
man. Which part between P,Q,R,S and T is responsible in
production storage and receives the bile?
The diagram shows an upper limb. What causes the arm
to bend?
A When muscle P contracts, bone X is pulled up.
B When muscle Q contracts, bone Y is pulled up.
C When muscle P relaxes, bone X is pulled up.
D When muscle Q relaxes, bone Y is pulled up.
18.
19.
A
B
C
D
Production Storage Receiving
T
S
Q
S
S
Q
S
T
R
T
P
R
Number of individuals Number of individuals
Number of individualsNumber of individuals
A B
C D
Characteristic Characteristic
CharacteristicCharacteristic
A B
C D
P
Q
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Four strips of carrots were immersed for 30 minutes in
sucrose solutions of different concentrations. The shapes
of the strips observed are as seen below.
Which strips were immersed in hypertonic solutions?
A I and III only C I, II and IV only
B II and IV only D III only
Some students want to compare the rate of evaporation of
two liquids. What must they do to ensure a fair test ?
A use equal volumes of the two liquids
B use two liquids of same colour
C place the liquids in evaporating dishes
D carry out the experiment in a laboratory
Which of the following causes the greenhouse effect ?
A The absorption of sunlight by Earth and reflection of
heat energy into the atmosphere
B Burning of fossil fuels releases gases which dissolve
in water vapour to become acid rain
C The flow of excess fertilisers into ponds results in
eutrophication
D The release of excess carbon dioxide into the
atmosphere causes infrared rays to be trapped
What are the products produced in the light reaction
which are then used in the dark reaction ?
A Oxygen atoms C Glucose
B Hydrogen atoms D Water
The following reaction represents the breakdown of ozone
in the stratosphere.
Y + O3
chlorine monoxide + O2
What is represent by Y ?
A Chlorine C Carbon dioxide
B Fluorine D Sulphur dioxide
The current theory on the structure of the plasma
membrane is best described by the
A fluid-mosaic model
B membrane unit model
C electrochemical model
D bilayer model
Muscle fibre is made up of bundles of smaller units called
A filaments
B myofibrils
C the sarcomere
D the sarcoplasm
Which of the following matches between the vertebrae
and its quantity is incorrect?
Vertebrae Quantity
A Sacrum 5
B Thorax 10
C Cervix 7
D Lumbar 5
Which of the following statement is not the appropriate
precaution to be taken during vigorous activities?
A Stretching exercises must be done before and after the
workout.
B Keep the body adequately hydrated during such
activities.
C Wear loose and comfortable clothing at all times.
D Drink a fruit juice if you have been sweating for more
than an hour.
Which of the statements below correctly refers to
osteoarthritis?
A A sudden contraction of one or more muscles and an
inability to use the affected muscles.
B The progressive degeneration and weakening of the
skeletal muscles that control movement.
C A common bone disorder which causes the bones to
become thinner, more brittle and more porous.
D The ageing process caused by the wear and tear of
the cartilage between the bones inside certain joints.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
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The stomach of a cow consists of four cavities. Which of
the following is the true stomach of the cow ?
A Rumen
B Abomasum
C Reticulum
D Omasum
The enzymes is an organic catalyst which is specific in
its actions. Which of the following explains the above
statement ?
A Enzyme is easily denatured
B Enzyme is not soluble in the body fluid
C The active site of an enzyme is specific to a certain
substrate
D Enzyme is an organic substance
The thigh muscle attached to the bone is called...
A tibia
B femur
C humerus
D tarsus
What is the function of the synovial fluid found in joints
which hold bones together ?
A Lubricates the joints to reduce the friction between
the ends of bones
B Prevents the bones from wearing away
C Binds two bones to form a joint
D Connects the ligaments to a bone
Which of the following is part of the axial skeleton of
humans ?
A Femur
B Scapula
C Pelvic girdle
D Cervical vertebrae
Which of the following blood components is involved in
the body’s defence againts diseases ?
A Platelet
B Fibrinogen
C Antibody
D Erythrocyte
30.
31.
32.
33.
34.
35.
Which of the following cells are present in both the xylem
and phloem?
A Vessels
B Sieve tube
C Parenchyma
D Companion cell
Which of the following events occur during meiosis I ?
I Crossing over
II The homologous chromosomes assemble at the
metaphase plate
III Paired chromatids separate
IV Pairing of the homologous chromosomes
A I, II and III only
B I, II and IV only
C II, III and IV only
D I, II, III and IV
The information below shows the stages of the blood
clotting mechanism in humans.
Which is the correct sequence of the blood clotting
mechanism?
A S, T, Q, P, R
B P, Q, R, S, T
C Q, S, T, P, R
D Q, P, S, T, R
36.
37.
38.
P - Fibrinogen changes into fibrin
Q- Clumped platelets
R- Meshwork of threads are formed over the
wound
S- Release of thrombokinase
T- Prothrombin changes into thrombin
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All the following animals have a double closed blood
circulatory system that is incomplete except
I cow
II fish
III grasshopper
IV frog
A I and II only
B II and IV only
C I, II and III only
D IV only
Which statements explain the opening and closing
mechanism of the stoma?
I During the day, the guard cells become hypertonic
and water enters the cells by osmosis, causing the
stoma to open.
II At night, the rate of transpiration is higher than the
rate of photosynthesis
III At night, the guard cells become flaccid and the
stoma closes
IV During the day, the glucose concentration is high and
this causes the stoma to close
A I and III only
B I and IV only
C II and III only
D II and IV only
Which adaptations help the villi to absorb nutrients
effectively?
I Abundant in number
II Thin walls
III Blood capillaries
IV Lacteals to absorb fatty acids and glycerol
A I and III only
B II and IV only
C I, II and III only
D I, II, III and IV
The above statement refers to the.....
A endocrine system
B lymphatic system
C muscular system
D excretory system
A solution with a higher concentration of water as
compared to the contents of a cell is known as...
A a hypotonic solution
B a hypertonic solution
C an isotonic solution
D a saline solution
Which of the following is correct concerning making a
hypothesis ?
A Making a guess about an event based on collected
data
B Stating a tentative generalisation which is subjected
to testing by one or more experiments
C Performing a series of data-gathering processes
D Grouping of objects or events
Enzymes are ________ produced by living things.
A lipids
B glycerol
C proteins
D carbohydrates
During transpiration, water molecules which escape from
the surface of the leaves draw other water molecules from
the mesophyll cells.
Which phenomenon best describes this process?
A Capillary action
B Transpirational pull
C Cohesive force
D Root pressure
39.
40.
41.
42.
43.
44.
45.
46.
• Defends the body against infection
• Returns excess tissue fluid to the blood
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Which of the characteristics enable the xylem tissue to
carry out its function efficiently?
I The end walls of the vessels are perforated with pores
II The tissue consists of hollow vessel joined end to end
III Its strong and impermeable walls are thickened with
lignin
IV It has a continuous tube system from the roots to the
leaves
A III and IV only
B I, II and III only
C II, III and IV only
D I, II, III and IV
A frog’s locomotion characteristics include :
I having strong and long back legs
II having back legs folded in a ‘Z’ shape
III having big and strong back leg muscles
IV having a curved back bone that straightens very fast
A II and IV only
B I, II and III only
C I, II and IV only
D I, II, III and IV
Which statements are true about muscle contractions?
I The interaction between actin and myosin brings about
muscle contractions
II Muscle contractions require energy in the form of
adenosine triphosphate
III Muscle contractions occur in response to nerve
impulses from the nervous system
IV Muscle contractions are independent of the action of
antagonistic muscles
A I, II and III only
B I, II and IV only
C II, III and IV only
D I, II, III and IV
47. Pitcher plants have structures to catch insects for food.
These insectivorous plants
I are heterotrophs
II are parasites
III carry out autotrophic nutrition
IV carry out holozoic nutrition
A I and II only
B I and IV only
C II and III only
D II and IV only
50.
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1.
The diagram below shows details of an experiment in which three similar towels P, Q and R with identical fat stains, were
washed in an enzyme-containing washing powder at three different temperatures, 10ºC, 38 ºC and 63 ºC.
All towels washed for 10 minutes
Towels after washing
Temperature of wash
(a) (i) Complete the diagram to show the temperature at which each towel was washed.
[3 marks ]
(Ii) Explain your answer for each towel.
………………………………………………………………………………………………
………………………………………………………………………………………………
……………………………………………………………………………………………… [3 marks ]
(ii) What is an enzyme?
………………………………………………………………………………........................
………………………………………………………………………………........................ [2 marks]
BIOLOGY PAPER 2
4551/2
[ SECTION A ]
P Q R
>
.............................................. .............................................. ..............................................
>
>
Diagram 1
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2.
(b) Suggest two changes to the procedure which might have resulted in the complete removal of the
stain from towel R.
(i) …………………………………………………………………...........………….......………….……………..
(ii) ………………………………………………………………......………………………………………….......
[2 marks]
(c) Name the enzymes likely to be in the powder.
………………………………………………………………......….......…………………………………. [1 mark]
(d) Suggest an enzymes that is efficient in removing blood stains.
………………………………………………………………......…………………………………………. [1 mark]
The diagram compares the relationship between hormonal levels with the development of follicles and changes in the
thickness of the uterine lining.
(a) In the diagram, draw the graph to show changes of hormonal level of :
(i) Luteinising hormone (LH)
(ii) Progesterone [2 marks]
(b) In the diagram complete the follicle development in the spaces provided. [2 marks]
(c) Based on the diagram, explain briefly the relationship between the follicle development and the levels of progesterone in
stimulating the thickening of the endometrium.
…………………………………………………………………….................................………….......................….....................
…………………………………………………………………….................................………….......................….....................
…………………………………………………………………….................................………….......................….....................
[4 marks]
Diagram 2
Oestrogen
Hormone
Follicle
Endometrial
wall
Blood
vessel
Time/Day
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(d) When the endometrium becomes thicker the number of blood vessels also increases. Explain briefly the relationship
between those two factors.
…………………………………………………………………….................................………….......................….....................
…………………………………………………………………….................................………….......................….....................
[2 marks]
(e) What is the problem that is usually faced by a woman who cannot conceive because her ova cannot be fertilised by her
husband’s sperm?
…………………………………………………………………….................................………….......................….....................
…………………………………………………………………….................................………….......................….....................
[2 marks]
Diagram 3 shows the longitudinal section of the human heart.
Diagram 3
(a) Name the parts labelled
P : ...........……………………………………………………………………...........
Q : ...........……………………………………………………………………...........
R : ...........……………………………………………………………………........... [3 marks]
(b) What are the functions of the valves in the heart?
…………………………………………………………………….................................………….......................….....................
…………………………………………………………………….................................………….......................… [2 marks]
(c ) (i) State the difference between the walls of the left ventricle and the right ventricle of the heart.
…………………………………………………………………….................................…………....... [1 mark]
(ii) Explain a reason.
…………………………………………………………………….................................………….......................…...
…………………………………………………………………….................................…………........ [2 marks]
(d) Do the contractions of the cardiac muscle need to be stimulated by the nerve impulses? Explain your answer.
…………………………………………………………………….................................………….......................…..............
…………………………………………………………………….................................…………..................... [2 marks]
(e) What is the circulating blood-like fluid found in some invertebrates with open circulatory systems such as the
grasshopper?
………………………………………………………….................................………….......................…............. [1 mark]
(f) State two characteristics of the circulatory system of a fish.
…………………………………………………………………….................................………….......................…..............
…………………………………………………………………….................................…………...................... [2 marks]
3.
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Diagram 4 shows the structure of the functional unit of the kidneys.
Diagram 4
(d) (i) Name the final product of secretion found in N.
.........................………….................................………….................. [1 mark]
(ii) There are substances found in higher concentration in the liquid N than in M. Name two of them.
.........................………….................................………….................. [2 marks]
(e) A hormone is released from a gland situated inferior to the hypothalamus; it is involved in the mechanism of
osmoregulation in the blood. Name
(i) the gland : .........................………….................................…………..................
(ii) the hormone : .........................………….................................………….................. [2 marks]
(f) Predict what will happen if the hormone cannot be secreted by the gland.
.........................………….................................…………...........................................…………...............................................
.........................………….................................…………...........................................…………......................... [1 mark]
4.
(a) Name the functional unit of the kidneys.
…………………………………………………………………
…………………………………………………………………
.........................………….......................….................. [1 mark]
(b) Label parts indicated
K :.........................…………..... M :.........................…………........
L : .........................…………..... N :.........................…………........
[4 marks]
(c) Explain what causes ultrafiltration to occur between structure K
and L.
.........................………….................................…………..................
...............………….................................…………............................
.....………….................................………….................................…
[1 mark]
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Diagram 5.1 is a schematic representation of the main components in the nervous pathway; while Figure 5.2 shows a
synapse.
Diagram 5.1 Diagram 5.2
(a) What is A and give an example of where it is located.
…………………………………………………………………….................................………….......................…...............
[2 marks]
(b) After being stimulated, how is information from A sent to the central nervous system?
…………………………………………………………………….................................………….......................….............
…………………………………………………………………….................................………….......................….............
[2 marks]
(c) What is structure B? Suggest one example of structure B.
…………………………………………………………………….................................………….......................….............
[2 marks]
(d) (i) What is structure Y?
....................................................................................................................................................... [1 mark]
(ii) Structure Y releases substance Z into the synaptic cleft. Name substance Z.
....................................................................................................................................................... [1 mark]
(e) Discuss briefly the transmission of nerve impulses across the synapse.
…………………………………………………………………….................................………….......................….............
…………………………………………………………………….................................………….......................….............
…………………………………………………………………….................................………….......................….............
[3 marks]
(f) What is the function of X?
…………………………………………………………………….................................………….......................….............
[1 mark]
5.
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6.
7.
[ SECTION B ]
The diagram above shows various types of polypeptides.
a) (i) Name the structure P, Q and R. [3 marks]
(ii) Describe the various structure of protein as shown above. [6 marks]
b) Explain the meaning of ‘intracellular enzymes’ and ‘extracellular enzymes’ by giving the named examples. [4 marks]
c) Enzymes play important roles in our daily life, whether be at home or in the industry. Discuss some applications of these
enzymes.
[7 marks]
The diagram above shows a pairing of homologous chromosomes and alleles.
a) Compare the following with suitable examples:
(i) Genes and alleles.
(ii) Dominant allele and recessive allele. [8 marks]
b) State Mendel’s First Law and Second Law. [2 marks]
c) With the help of a suitable chart, explain how sex chromosomes decide the sex of humans. [10 marks]
P Q R
Diagram 6
Diagram 7
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a) Describe the process of assimilation of digested food and the importance of liver in the process.
[5 marks]
b) Ileum, the last part of the small intestine, is the major site of nutrient absorption.
(i) Explain how ileum is adapted for this highly specific function. [7 marks]
(ii) Draw and label the structure of villus. [4 marks]
(iii)Name all fat-soluble vitamins. [2 marks]
c) Explain how bad eating habits can cause a named health problem. [2 marks]
a) The human skeleton is indeed a wonderful system serving many purposes. Discuss the functions of the human skeleton.
[ 6 marks ]
b) Explain the adaptation of the skeletal system of grasshopper for the movement.
[ 8 marks ]
c) Fishes have to face certain problems when moving in water. Describe the problems and how each problem is overcome.
[ 6 marks ]
8.
9.
[ SECTION C ]
For Biology Paper 3 questions, login to http://www.timesguides.com
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BIOLOGY PAPER 3
An experiment was carried out by 40 students of SMK Taman Sri Cahaya to study the growth of Lemna sp.
The following were the procedure for the experiment:
• A small beaker was filled with some pond water.
• Five Lemna sp. were placed in the beaker.
• The number of Lemna sp. (each Lemna sp. consists of a frond) in the beaker was counted every two days.
• The diagram below shows the number of Lemna sp. In the beaker from the beginning of the experiment (Day 0) until
day 14.
(a) In the diagram, record the number of Lemna sp. starting from day 2 until day 14 in the spaces provided.
[ 3 marks ]
2.
Surface of pond water
Lemna sp.
Beaker
Day 0 : Number of Lemna sp.= 10 Day 2 : Number of Lemna sp.= _____
Day 4 : Number of Lemna sp.= _____ Day 6 : Number of Lemna sp.= _____
Day 8 : Number of Lemna sp.= _____ Day 10 : Number of Lemna sp.= _____
Day 12 : Number of Lemna sp.= _____ Day 14 : Number of Lemna sp.= _____
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(b) Construct a table to record the results of this experiment. Your table must have the following headings :
• Number of Lemna sp.
• Time
[ 3 marks ]
(c) (i) State one general observation made from the table in (b).
................................................................................................................................................................................
[ 3 marks ]
(ii) State one inference concerning the composition of pond water from the observation in (c) i.
................................................................................................................................................................................
[ 3 marks ]
(d) Plot a graph to display your results in (b).
[ 3 marks ]
(e) State two different observations made from your table in (b).
1. .....................................................................................................................................................................................................
2. .....................................................................................................................................................................................................
[ 3 marks ]
(f) (i) State one inference for the first six days of population growth as seen in (d).
...........................................................................................................................................................................................
...........................................................................................................................................................................................
[ 3 marks ]
(ii) State one inference from the last two days of population growth as seen in (d).
...........................................................................................................................................................................................
...........................................................................................................................................................................................
[ 3 marks ]
(g) State the variables in this experiment :
(i) Manipulated variable: ..................................................................................
(ii) Responding variable: ...................................................................................
(iii) Controlled variable: .....................................................................................
[ 3 marks ]
(h) State the hypothesis for this experiment.
......................................................................................................................................................................................................
......................................................................................................................................................................................................
[ 3 marks ]
(i) In the experiment, if the small beaker with pond water is replaced by a larger beaker containing river water, predict what
will happen?
.....................................................................................................................................................................................................
.....................................................................................................................................................................................................
[ 3 marks ]
2.