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DC (NH/JG) 80967/5
© UCLES 2014 [Turn over
*1841291605*
BIOLOGY 0610/33
Paper 3 Extended October/November 2014
1 hour 15 minutes
Candidates answer on the Question Paper.
No Additional Materials are required.
READ THESE INSTRUCTIONS FIRST
Write your Centre number, candidate number and name on all the work you hand in.
Write in dark blue or black pen.
You may use an HB pencil for any diagrams or graphs.
Do not use staples, paper clips, glue or correction fluid.
DO NOT WRITE IN ANY BARCODES.
Answer all questions.
Electronic calculators may be used.
You may lose marks if you do not show your working or if you do not use appropriate units.
At the end of the examination, fasten all your work securely together.
The number of marks is given in brackets [ ] at the end of each question or part question.
Cambridge International Examinations
Cambridge International General Certificate of Secondary Education
The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.
2
0610/33/O/N/14© UCLES 2014
BLANK PAGE
3
0610/33/O/N/14© UCLES 2014 [Turn over
1 Fig. 1.1 shows an animal cell and a plant cell as seen with a light microscope.
animal cell plant cell
Fig. 1.1
(a) Table 1.1 shows some structural features of the animal cell and the plant cell in Fig. 1.1.
Complete the table by
• finishing the row for nucleus
• adding three structural features, visible in Fig. 1.1, and indicating whether they are
present (✓) or absent (✗) in the animal cell and in the plant cell.
Table 1.1
structural feature animal cell plant cell
cell wall ✗ ✓
nucleus
[4]
4
0610/33/O/N/14© UCLES 2014
(b) The cells were kept in a dilute salt solution. They were then transferred to distilled water.
Explain what will happen to each of these two cells when they are placed into distilled water.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...............................................................................................................................................[4]
(c) Magnesium is a plant nutrient. Scientists think that magnesium is involved in the transport of
sucrose from the leaves to the rest of a plant.
(i) Name the tissue that transports sucrose in plants.
.......................................................................................................................................[1]
The scientists grew some tomato plants with their roots in a solution that contained all the
mineral nutrients that plants require. After a while, the plants were divided into two groups.
• Group A continued to receive the solution containing all the nutrients.
• Group B received a solution that did not contain any magnesium.
After 12 days, measurements were made on the leaves and the results are shown in Fig. 1.2.
A B
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
rate of movement of
sucrose out of the leaves
/ arbitrary units
A B
120
0
20
40
60
80
100
sucrose concentration
in the leaves
/ arbitrary units
group group
Fig. 1.2
5
0610/33/O/N/14© UCLES 2014 [Turn over
(ii) Describe the effect of magnesium deficiency on the transport of sucrose out of the leaves
and the sucrose concentration in the leaves.
transport of sucrose out of the leaves ................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
concentration of sucrose in the leaves ...............................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[4]
(iii) The plants in Group B remained in the magnesium-deficient solution for longer than
12 days. At the end of this time they showed symptoms of magnesium deficiency.
Describe and explain the symptoms that the plants would show.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[3]
[Total: 16]
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2 (a) Sickle cell anaemia is an inherited disease. The gene for haemoglobin exists in two forms,
HbN and HbS. People who are HbSHbS have the disease and experience symptoms including
fatigue and extreme pain in their joints. People who are HbNHbS are carriers of the disease
and may have mild symptoms, if any at all.
(i) Table 2.1 shows four genetic terms.
Complete Table 2.1 by stating a specific example, used in the paragraph above, of each
genetic term.
Table 2.1
genetic term example used in the passage
an allele
a heterozygous
genotype
a homozygous
genotype
phenotype
[4]
(ii) Sickle cell anaemia is not found throughout the whole world. Most cases of the disease
occur in sub-Saharan Africa and in parts of Asia. The distribution is similar to that for the
infectious disease malaria.
Explain why the distribution of sickle cell anaemia and malaria are similar.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[5]
7
0610/33/O/N/14© UCLES 2014 [Turn over
(b) Down’s syndrome is an example of a characteristic that shows discontinuous variation.
State the cause of Down’s syndrome.
...................................................................................................................................................
...............................................................................................................................................[1]
(c) Explain how discontinuous variation differs from continuous variation, in its expression and
cause.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...............................................................................................................................................[3]
[Total: 13]
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3 (a) Define the term growth.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...............................................................................................................................................[3]
(b) Fig. 3.1 shows the events that follow fertilisation in a human.
E A
D
B
C
oviduct
Fig. 3.1
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0610/33/O/N/14© UCLES 2014 [Turn over
(i) Name structures A, B and C.
A ........................................................................................................................................
B ........................................................................................................................................
C ....................................................................................................................................[3]
(ii) State the process that is occurring at D and the process that is occurring at E.
D ........................................................................................................................................
E ....................................................................................................................................[2]
(iii) Suggest how the embryo is moved along the oviduct.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
[Total: 10]
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0610/33/O/N/14© UCLES 2014
4 Yeast, Saccharomyces cerevisiae, is a single-celled fungus.
(a) State one reason why yeast is classified as a fungus and not as a bacterium.
...................................................................................................................................................
...............................................................................................................................................[1]
(b) A student investigated the anaerobic respiration of yeast to find out how the yeast population
changed and how much alcohol was produced over a period of 14 hours.
Complete and balance the chemical equation for anaerobic respiration in yeast.
C6H12O6 ........................ + ........................ [2]
(c) The student set up a small fermenter containing:
• 1.0g dry yeast
• 250cm3 glucose solution
• a solution containing ammonium compounds as a source of nitrogen.
The fermenter is shown in Fig. 4.1.
air lock water
water outwater in
water
jacket
yeast, glucose
and ammonium
compounds in
water
Fig. 4.1
Explain the importance of each of the following:
(i) the water jacket
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
11
0610/33/O/N/14© UCLES 2014 [Turn over
(ii) a source of nitrogen
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
(iii) the air lock.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
12
0610/33/O/N/14© UCLES 2014
(d) Fig. 4.2 shows the change in the yeast population and in the alcohol content in the student’s
fermenter.
0
0 2 4 6 8 10 12 14
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
yeast
population
/g dm–3
alcohol
concentration
/g dm–3
time/hours
alcohol
yeast
×
×
×
× × ×
×
×
×
× × × × × × ×
×
×
×
×
×
×
×
×
×
× × × × ×
Fig. 4.2
(i) Describe the changes in the population of yeast.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[3]
(ii) Explain the changes you have described.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[3]
13
0610/33/O/N/14© UCLES 2014 [Turn over
(e) Name two industrial processes that rely on anaerobic respiration of yeast.
1.................................................................................................................................................
2.............................................................................................................................................[2]
[Total: 17]
14
0610/33/O/N/14© UCLES 2014
5 (a) A researcher carried out four experiments, A to D, to investigate the effect of light intensity
on the rate of photosynthesis of cucumber plants. The experiments were carried out at two
concentrations of carbon dioxide and at two temperatures.
The results are shown in Fig. 5.1.
Key
×
×
×
×
×
×
×
0
0
50
100
150
200
250
300
5 10 15 20 25
light intensity/arbitrary units
rate of photosynthesis
/arbitrary units
A
B
C
D
CO2
/ %
temp
/ °C
A 30
20
30
20
B
C
D
0.13
0.13
0.03
0.03
Fig. 5.1
(i) Use the results in Fig. 5.1 to identify the limiting factor for the rate of photosynthesis at
the light intensities given in Table 5.1.
Write your answers in Table 5.1.
Table 5.1
experiment light intensity / arbitrary units limiting factor
A 20
B 20
C 20
D 5 light intensity
[3]
15
0610/33/O/N/14© UCLES 2014 [Turn over
(ii) Define the term limiting factor.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
Fig. 5.1 shows that providing plants with more carbon dioxide can increase the rate of
photosynthesis.
An investigation was carried out in China using crop residues and animal manure mixed together
in composting units that were placed into a glasshouse containing crop plants.
Fig. 5.2 shows a composting unit in which decomposition takes place.
grid
crop residues and
animal manure
sponge
carbon dioxide
Fig. 5.2
(b) (i) Suggest the reason for using a grid instead of a solid base for the composting unit.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
16
0610/33/O/N/14© UCLES 2014
(ii) The sponge was soaked in sulfuric acid to remove any ammonia gas released by the
decomposing material (compost).
Explain how the ammonia was produced.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
(c) Two glasshouses were used in this investigation. One glasshouse contained composting units
and the other did not. Each glasshouse contained the same number and type of crop plants.
The concentration of carbon dioxide in both glasshouses was measured at midday.
The results are shown in Fig. 5.3.
0 10 20 30 40 50 60
0
100
200
300
400
500
600
700
carbon dioxide
concentration
/parts per million
time/days
×
×
×
×
×
× × ×
×
×
× ×
×
×
with composting units
no composting units
Fig. 5.3
(i) State why a glasshouse without composting units was used in the investigation.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[2]
17
0610/33/O/N/14© UCLES 2014 [Turn over
(ii) Describe the results shown in Fig. 5.3.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[3]
(d) At the end of the investigation the crop plants were harvested and weighed. Table 5.2 gives
the results.
Table 5.2
crop plant
mean fresh mass / g per plant
no composting
units
composting
units
Chinese cabbage 115.7 355.8
celery 44.7 133.9
lettuce 95.5 349.4
Use the information in Fig. 5.3 and in Table 5.2 to summarise the results of the study.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...............................................................................................................................................[4]
[Total: 18]
18
0610/33/O/N/14© UCLES 2014
6 Fig. 6.1 shows the movement of the ribs and the diaphragm during breathing in.
diaphragm
sternum
external
intercostal
muscles
vertebrae
Fig. 6.1
(a) State what happens to the following structures during breathing in.
diaphragm..................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
ribcage.......................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
external intercostal muscles ......................................................................................................
...................................................................................................................................................
...............................................................................................................................................[3]
(b) Explain the effect of strenuous physical activity on the pH of the blood.
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...................................................................................................................................................
...............................................................................................................................................[3]
[Total: 6]
19
0610/33/O/N/14© UCLES 2014
BLANK PAGE
20
0610/33/O/N/14© UCLES 2014
BLANK PAGE
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local
Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.

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0610 w14 qp_33

  • 1. This document consists of 17 printed pages and 3 blank pages. DC (NH/JG) 80967/5 © UCLES 2014 [Turn over *1841291605* BIOLOGY 0610/33 Paper 3 Extended October/November 2014 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. Electronic calculators may be used. You may lose marks if you do not show your working or if you do not use appropriate units. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. Cambridge International Examinations Cambridge International General Certificate of Secondary Education The syllabus is approved for use in England, Wales and Northern Ireland as a Cambridge International Level 1/Level 2 Certificate.
  • 3. 3 0610/33/O/N/14© UCLES 2014 [Turn over 1 Fig. 1.1 shows an animal cell and a plant cell as seen with a light microscope. animal cell plant cell Fig. 1.1 (a) Table 1.1 shows some structural features of the animal cell and the plant cell in Fig. 1.1. Complete the table by • finishing the row for nucleus • adding three structural features, visible in Fig. 1.1, and indicating whether they are present (✓) or absent (✗) in the animal cell and in the plant cell. Table 1.1 structural feature animal cell plant cell cell wall ✗ ✓ nucleus [4]
  • 4. 4 0610/33/O/N/14© UCLES 2014 (b) The cells were kept in a dilute salt solution. They were then transferred to distilled water. Explain what will happen to each of these two cells when they are placed into distilled water. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[4] (c) Magnesium is a plant nutrient. Scientists think that magnesium is involved in the transport of sucrose from the leaves to the rest of a plant. (i) Name the tissue that transports sucrose in plants. .......................................................................................................................................[1] The scientists grew some tomato plants with their roots in a solution that contained all the mineral nutrients that plants require. After a while, the plants were divided into two groups. • Group A continued to receive the solution containing all the nutrients. • Group B received a solution that did not contain any magnesium. After 12 days, measurements were made on the leaves and the results are shown in Fig. 1.2. A B 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 rate of movement of sucrose out of the leaves / arbitrary units A B 120 0 20 40 60 80 100 sucrose concentration in the leaves / arbitrary units group group Fig. 1.2
  • 5. 5 0610/33/O/N/14© UCLES 2014 [Turn over (ii) Describe the effect of magnesium deficiency on the transport of sucrose out of the leaves and the sucrose concentration in the leaves. transport of sucrose out of the leaves ................................................................................ ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... concentration of sucrose in the leaves ............................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[4] (iii) The plants in Group B remained in the magnesium-deficient solution for longer than 12 days. At the end of this time they showed symptoms of magnesium deficiency. Describe and explain the symptoms that the plants would show. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3] [Total: 16]
  • 6. 6 0610/33/O/N/14© UCLES 2014 2 (a) Sickle cell anaemia is an inherited disease. The gene for haemoglobin exists in two forms, HbN and HbS. People who are HbSHbS have the disease and experience symptoms including fatigue and extreme pain in their joints. People who are HbNHbS are carriers of the disease and may have mild symptoms, if any at all. (i) Table 2.1 shows four genetic terms. Complete Table 2.1 by stating a specific example, used in the paragraph above, of each genetic term. Table 2.1 genetic term example used in the passage an allele a heterozygous genotype a homozygous genotype phenotype [4] (ii) Sickle cell anaemia is not found throughout the whole world. Most cases of the disease occur in sub-Saharan Africa and in parts of Asia. The distribution is similar to that for the infectious disease malaria. Explain why the distribution of sickle cell anaemia and malaria are similar. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[5]
  • 7. 7 0610/33/O/N/14© UCLES 2014 [Turn over (b) Down’s syndrome is an example of a characteristic that shows discontinuous variation. State the cause of Down’s syndrome. ................................................................................................................................................... ...............................................................................................................................................[1] (c) Explain how discontinuous variation differs from continuous variation, in its expression and cause. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] [Total: 13]
  • 8. 8 0610/33/O/N/14© UCLES 2014 3 (a) Define the term growth. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] (b) Fig. 3.1 shows the events that follow fertilisation in a human. E A D B C oviduct Fig. 3.1
  • 9. 9 0610/33/O/N/14© UCLES 2014 [Turn over (i) Name structures A, B and C. A ........................................................................................................................................ B ........................................................................................................................................ C ....................................................................................................................................[3] (ii) State the process that is occurring at D and the process that is occurring at E. D ........................................................................................................................................ E ....................................................................................................................................[2] (iii) Suggest how the embryo is moved along the oviduct. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] [Total: 10]
  • 10. 10 0610/33/O/N/14© UCLES 2014 4 Yeast, Saccharomyces cerevisiae, is a single-celled fungus. (a) State one reason why yeast is classified as a fungus and not as a bacterium. ................................................................................................................................................... ...............................................................................................................................................[1] (b) A student investigated the anaerobic respiration of yeast to find out how the yeast population changed and how much alcohol was produced over a period of 14 hours. Complete and balance the chemical equation for anaerobic respiration in yeast. C6H12O6 ........................ + ........................ [2] (c) The student set up a small fermenter containing: • 1.0g dry yeast • 250cm3 glucose solution • a solution containing ammonium compounds as a source of nitrogen. The fermenter is shown in Fig. 4.1. air lock water water outwater in water jacket yeast, glucose and ammonium compounds in water Fig. 4.1 Explain the importance of each of the following: (i) the water jacket ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2]
  • 11. 11 0610/33/O/N/14© UCLES 2014 [Turn over (ii) a source of nitrogen ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] (iii) the air lock. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2]
  • 12. 12 0610/33/O/N/14© UCLES 2014 (d) Fig. 4.2 shows the change in the yeast population and in the alcohol content in the student’s fermenter. 0 0 2 4 6 8 10 12 14 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 yeast population /g dm–3 alcohol concentration /g dm–3 time/hours alcohol yeast × × × × × × × × × × × × × × × × × × × × × × × × × × × × × × Fig. 4.2 (i) Describe the changes in the population of yeast. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3] (ii) Explain the changes you have described. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3]
  • 13. 13 0610/33/O/N/14© UCLES 2014 [Turn over (e) Name two industrial processes that rely on anaerobic respiration of yeast. 1................................................................................................................................................. 2.............................................................................................................................................[2] [Total: 17]
  • 14. 14 0610/33/O/N/14© UCLES 2014 5 (a) A researcher carried out four experiments, A to D, to investigate the effect of light intensity on the rate of photosynthesis of cucumber plants. The experiments were carried out at two concentrations of carbon dioxide and at two temperatures. The results are shown in Fig. 5.1. Key × × × × × × × 0 0 50 100 150 200 250 300 5 10 15 20 25 light intensity/arbitrary units rate of photosynthesis /arbitrary units A B C D CO2 / % temp / °C A 30 20 30 20 B C D 0.13 0.13 0.03 0.03 Fig. 5.1 (i) Use the results in Fig. 5.1 to identify the limiting factor for the rate of photosynthesis at the light intensities given in Table 5.1. Write your answers in Table 5.1. Table 5.1 experiment light intensity / arbitrary units limiting factor A 20 B 20 C 20 D 5 light intensity [3]
  • 15. 15 0610/33/O/N/14© UCLES 2014 [Turn over (ii) Define the term limiting factor. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] Fig. 5.1 shows that providing plants with more carbon dioxide can increase the rate of photosynthesis. An investigation was carried out in China using crop residues and animal manure mixed together in composting units that were placed into a glasshouse containing crop plants. Fig. 5.2 shows a composting unit in which decomposition takes place. grid crop residues and animal manure sponge carbon dioxide Fig. 5.2 (b) (i) Suggest the reason for using a grid instead of a solid base for the composting unit. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2]
  • 16. 16 0610/33/O/N/14© UCLES 2014 (ii) The sponge was soaked in sulfuric acid to remove any ammonia gas released by the decomposing material (compost). Explain how the ammonia was produced. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2] (c) Two glasshouses were used in this investigation. One glasshouse contained composting units and the other did not. Each glasshouse contained the same number and type of crop plants. The concentration of carbon dioxide in both glasshouses was measured at midday. The results are shown in Fig. 5.3. 0 10 20 30 40 50 60 0 100 200 300 400 500 600 700 carbon dioxide concentration /parts per million time/days × × × × × × × × × × × × × × with composting units no composting units Fig. 5.3 (i) State why a glasshouse without composting units was used in the investigation. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[2]
  • 17. 17 0610/33/O/N/14© UCLES 2014 [Turn over (ii) Describe the results shown in Fig. 5.3. ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... .......................................................................................................................................[3] (d) At the end of the investigation the crop plants were harvested and weighed. Table 5.2 gives the results. Table 5.2 crop plant mean fresh mass / g per plant no composting units composting units Chinese cabbage 115.7 355.8 celery 44.7 133.9 lettuce 95.5 349.4 Use the information in Fig. 5.3 and in Table 5.2 to summarise the results of the study. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[4] [Total: 18]
  • 18. 18 0610/33/O/N/14© UCLES 2014 6 Fig. 6.1 shows the movement of the ribs and the diaphragm during breathing in. diaphragm sternum external intercostal muscles vertebrae Fig. 6.1 (a) State what happens to the following structures during breathing in. diaphragm.................................................................................................................................. ................................................................................................................................................... ................................................................................................................................................... ribcage....................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... external intercostal muscles ...................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] (b) Explain the effect of strenuous physical activity on the pH of the blood. ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ................................................................................................................................................... ...............................................................................................................................................[3] [Total: 6]
  • 20. 20 0610/33/O/N/14© UCLES 2014 BLANK PAGE Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge.