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1

All living organisms release energy from nutrient molecules within their cells. What is the name of this characteristic?

1. Characteristics and classification of living organisms  →  1.1. Characteristics of living organisms

19. Organisms and their environment  →  19.1. Energy flow

12. Respiration  →  12.3. Anaerobic respiration

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2

Which diagram shows a flower from a monocotyledon?

16. Reproduction  →  16.3. Sexual reproduction in plants

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3

The diagram shows a cross-section through two guard cells of a leaf. W X Y Z Which labelled structures would also be found in an animal cell?

6. Plant nutrition  →  6.2. Leaf structure

2. Organisation of the organism  →  2.1. Cell structure

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4

Which level of organisation is shown...

2. Organisation of the organism  →  2.1. Cell structure

9. Transport in animals  →  9.2. Heart

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5

Female moths release chemicals into the air. Male moths detect these chemicals and fly towards the females. How do the chemicals spread through the air?

3. Movement into and out of cells  →  3.1. Diffusion

3. Movement into and out of cells  →  3.3. Active transport

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6

The diagram shows a section through a mesophyll cell of a leaf. Which part is partially permeable?

6. Plant nutrition  →  6.2. Leaf structure

3. Movement into and out of cells  →  3.2. Osmosis

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7

What are the smaller basic units of starch and glycogen molecules?

4. Biological molecules  →  4.1. Biological molecules

7. Human nutrition  →  7.4. Chemical digestion

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8

DNA is made up of 1 strands coiled together. The strands contain chemicals called 2 . These chemicals form 3 , A pairing with T and C pairing with G. Which words correctly complete gaps 1, 2 and 3?

4. Biological molecules  →  4.1. Biological molecules

17. Inheritance  →  17.1. Chromosomes, genes and proteins

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9

What is the correct definition of an enzyme?

5. Enzymes  →  5.1. Enzymes

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10

Which statement describes the effect of temperature on enzymes?

5. Enzymes  →  5.1. Enzymes

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11

The graph shows the rate of photosynthesis at different carbon dioxide concentrations. X rate of photosynthesis carbon dioxide concentration What could be the limiting factor of photosynthesis at X on the graph?

6. Plant nutrition  →  6.1. Photosynthesis

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12

The list shows features of a plant leaf. air spaces between spongy mesophyll cells chloroplasts in mesophyll cells contains a natural insecticide xylem vessels close to mesophyll cells Which features are adaptations for photosynthesis?

6. Plant nutrition  →  6.2. Leaf structure

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13

Which nutrient is required to prevent scurvy?

7. Human nutrition  →  7.1. Diet

4. Biological molecules  →  4.1. Biological molecules

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14

Which diagram represents the action of lipase?

5. Enzymes  →  5.1. Enzymes

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15

The image shows a cross-section of part of a leaf. Which labelled structure is the xylem?

8. Transport in plants  →  8.1. Xylem and phloem

6. Plant nutrition  →  6.2. Leaf structure

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16

The diagram shows a cross-section of a root. Three regions of the root are numbered. Which regions contain cells through which water must pass to reach the xylem?

8. Transport in plants  →  8.2. Water uptake

8. Transport in plants  →  8.1. Xylem and phloem

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17

In a double circulation, what is the role of the right side of the heart?

9. Transport in animals  →  9.2. Heart

9. Transport in animals  →  9.1. Circulatory systems

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18

The photomicrograph shows some human blood cells. X What is the name of cell X and what is its function?

9. Transport in animals  →  9.4. Blood

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19

Three statements about immune responses are listed. Antigens trigger an immune response which produces antibodies. Memory cells are produced. Antibodies are acquired from another individual. Which statements are correct when describing active immunity?

10. Diseases and immunity  →  10.1. Diseases and immunity

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20

Which row shows the action of muscles during inspiration?

11. Gas exchange in humans  →  11.1. Gas exchange in humans

9. Transport in animals  →  9.2. Heart

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21

Carbon dioxide is produced by aerobic respiration. How many molecules of carbon dioxide are produced from the aerobic respiration of three molecules of glucose?

12. Respiration  →  12.2. Aerobic respiration

12. Respiration  →  12.3. Anaerobic respiration

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22

Which statements describe how an oxygen debt is removed after vigorous exercise?

12. Respiration  →  12.3. Anaerobic respiration

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23

Which statement about urea is correct?

13. Excretion in humans  →  13.1. Excretion in humans

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24

The diagram shows the junction between two neurones. X What is labelled at X?

14. Coordination and response  →  14.1. Coordination and response

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25

The diagram shows the density of rods and cones across a section of the retina. What is the position of the fovea?

14. Coordination and response  →  14.2. Sense organs

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26

What is the synthetic plant hormone 2,4-D used for?

16. Reproduction  →  16.3. Sexual reproduction in plants

14. Coordination and response  →  14.5. Tropic responses

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27

Which statement about asexual reproduction would be a disadvantage for a farmer growing crop plants?

16. Reproduction  →  16.1. Asexual reproduction

16. Reproduction  →  16.3. Sexual reproduction in plants

16. Reproduction  →  16.2. Sexual reproduction

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28

The diagram shows an abnormal sperm cell. Why would the abnormal sperm cell be unable to fertilise an egg?

16. Reproduction  →  16.4. Sexual reproduction in humans

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29

One type of contraceptive pill contains progesterone and oestrogen. Some effects of the pill are listed. inhibit FSH production inhibit LH production inhibit thickening of the uterus wall Which prevent the development and the release of an egg cell?

16. Reproduction  →  16.5. Sex hormones in humans

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30

Some fruit flies have orange eyes and others have red eyes. If two orange-eyed fruit flies are crossed, their offspring always have orange eyes. If two red-eyed fruit flies are crossed, their offspring can have orange eyes or red eyes. What can be concluded from these observations?

17. Inheritance  →  17.4. Monohybrid inheritance

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31

The diagram shows a section of a flower that has been cross-pollinated. Which statements about this flower are correct?

16. Reproduction  →  16.3. Sexual reproduction in plants

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32

A woman with normal colour vision is a carrier for the colour blindness allele (XBXb). She has a male child with a man who has normal colour vision (XBY). What is the chance of the male child being colour-blind?

17. Inheritance  →  17.4. Monohybrid inheritance

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33

Sickle cell anaemia is a genetic disorder which results in severe illness in homozygous individuals. In some human populations, being heterozygous can be beneficial. What could be the reason for this?

17. Inheritance  →  17.4. Monohybrid inheritance

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34

Which statement about selective breeding is correct?

18. Variation and selection  →  18.3. Selection

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35

What is the name of an organism that obtains its energy from dead organic material?

19. Organisms and their environment  →  19.2. Food chains and food webs

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36

A herd of red deer live in a forest that contains snakes and a large variety of birds. Which group of organisms is an example of a population?

19. Organisms and their environment  →  19.4. Populations

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37

With which kingdoms do bacteria share the same genetic code?

1. Characteristics and classification of living organisms  →  1.3. Features of organisms

2. Organisation of the organism  →  2.1. Cell structure

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38

Which process makes use of a genetically engineered organism?

21. Biotechnology and genetic modification  →  21.2. Biotechnology

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39

What is a reason for conserving plant species?

20. Human influences on ecosystems  →  20.4. Conservation

6. Plant nutrition  →  6.1. Photosynthesis

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40

To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge Assessment International Education Copyright Acknowledgements Booklet. This is produced for each series of examinations and is freely available to download at www.cambridgeinternational.org after the live examination series. 40 The food web shows the feeding relationships in a woodland. trees wood pigeons caterpillars chaffinches sparrowhawks grey squirrels If all the chaffinches in the food web die, which effect would this have?

19. Organisms and their environment  →  19.2. Food chains and food webs

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