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1

The diagram shows cells from a plant leaf. Which structure contains a high concentration of magnesium?

1. Cells  →  1.1. Cell structure and function

6. Plant nutrition  →  6.3. Mineral nutrition

6. Plant nutrition  →  6.2. Leaf structure

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2

What are the functions of xylem vessels?

7. Transport in flowering plants  →  7.2. Transpiration and translocation

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3

The diagram shows a typical plant cell which has been in a concentrated salt solution for 10 minutes. Which numbered structures are partially permeable?

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

1. Cells  →  1.1. Cell structure and function

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4

Which row applies to active transport?

3. Movement into and out of cells  →  3.2. Active transport

7. Transport in flowering plants  →  7.1. Uptake and transport of water and ions

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5

Which statements are correct?

5. Enzymes  →  5.1. Enzyme action

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6

The diagram shows the effect of temperature on the rate of an enzyme-controlled reaction. rate of reaction temperature X What is the explanation for the part of the graph labelled X?

5. Enzymes  →  5.2. Effects of temperature and pH

5. Enzymes  →  5.1. Enzyme action

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7

A small mountain lake has aquatic plants growing under water on the lake bed. Shortly after heavy rainfall, the mud on the lake bed becomes stirred up and the water level rises. Why does this cause the rate of photosynthesis of these plants to fall?

6. Plant nutrition  →  6.1. Photosynthesis

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8

Some plants have large leaves and are growing well but the leaves are turning yellow. Which factor is likely to be causing this problem?

6. Plant nutrition  →  6.3. Mineral nutrition

6. Plant nutrition  →  6.2. Leaf structure

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9

Which row shows the average daily energy requirement for the people in the table?

19. Relationships of organisms with one another and with the environment  →  19.1. Energy flow

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10

The diagram shows an experiment. beaker partially permeable membrane lipase and cooking oil water After 30 minutes, tests were carried out on the contents of the membrane bag and on the water in the beaker. Which row shows the results of the tests?

4. Biological molecules  →  4.1. Biological molecules

5. Enzymes  →  5.2. Effects of temperature and pH

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11

Which function is not carried out by the liver?

13. Excretion  →  13.2. Urinary system

8. Human nutrition  →  8.3. Absorption and assimilation

13. Excretion  →  13.1. Excretion

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12

Which statements about root hairs are correct?

7. Transport in flowering plants  →  7.1. Uptake and transport of water and ions

3. Movement into and out of cells  →  3.2. Active transport

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13

The graph shows the transpiration rates of two plants during one day. Both plants were grown under identical conditions. transpiration rate 03:00 06:00 09:00 00:00 12:00 00:00 time 15:00 18:00 21:00 plant X plant Y Which statement explains what the graph shows?

7. Transport in flowering plants  →  7.2. Transpiration and translocation

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14

Some people have a rare heart condition in which the lower left chamber of the heart has not developed properly and is much smaller than normal. The immediate result of this condition is to cause lower than normal blood flow into which blood vessel?

11. Transport in humans  →  11.3. Blood vessels

11. Transport in humans  →  11.2. Heart

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15

Tissue transplants are normally rejected by the body unless the transplant tissue and the patient are very carefully matched. Which component of the blood is responsible for the rejection of transplanted tissue?

11. Transport in humans  →  11.4. Blood

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16

The diagram shows movement of substances between blood in a capillary and tissue fluid. high pressure blood low pressure blood tissue cells water, oxygen, glucose water, carbon dioxide tissue fluid tissue fluid capillary By which process does water move from tissue fluid to capillary?

11. Transport in humans  →  11.4. Blood

11. Transport in humans  →  11.3. Blood vessels

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17

An experiment is set up, as shown...

6. Plant nutrition  →  6.1. Photosynthesis

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18

Which equation represents anaerobic respiration in yeast?

10. Respiration  →  10.3. Anaerobic respiration

10. Respiration  →  10.1. Respiration

18. Biotechnology and genetic modification  →  18.1. Biotechnology

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19

The graph shows the rate and depth of breathing at rest. time / seconds lung volume / cm3 Which graph shows the rate and depth of breathing during exercise?

9. Human gas exchange  →  9.1. Human gas exchange

10. Respiration  →  10.3. Anaerobic respiration

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20

How do the concentrations of oxygen and urea in the renal artery compare to their concentrations in the renal vein?

13. Excretion  →  13.2. Urinary system

11. Transport in humans  →  11.3. Blood vessels

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21

Which changes occur when a person walks from a very cold room into a hot room?

14. Coordination and control  →  14.5. Temperature control

11. Transport in humans  →  11.3. Blood vessels

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22

The diagram shows a section through part of the skin. Which structure is the best insulator?

14. Coordination and control  →  14.5. Temperature control

11. Transport in humans  →  11.3. Blood vessels

11. Transport in humans  →  11.2. Heart

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23

The graph shows changes in the shape of the lenses of a person’s eyes while watching a bird flying. At which point is the bird flying most rapidly towards the person?

14. Coordination and control  →  14.2. Mammalian sense organs

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24

The diagram shows the nerve pathway in a reflex action when a person accidentally touches something hot. Which row correctly identifies a sensory neurone, a relay neurone and a motor neurone?

14. Coordination and control  →  14.1. Mammalian nervous system

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25

A patient shows symptoms of unexplained weight loss, severe thirst and frequent need of urination. A test shows high levels of glucose in the urine. Which condition is diagnosed?

14. Coordination and control  →  14.6. Blood glucose control

8. Human nutrition  →  8.1. Diet

14. Coordination and control  →  14.3. Mammalian hormones

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26

The diagram shows the forelimb of a rabbit. Which labelled bone is the ulna?

14. Coordination and control  →  14.2. Mammalian sense organs

14. Coordination and control  →  14.5. Temperature control

11. Transport in humans  →  11.3. Blood vessels

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27

Which activity is most likely to cause lung disease?

12. Disease and immunity  →  12.1. Disease

12. Disease and immunity  →  12.2. Antibiotics

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28

The table shows some features of three types of microorganism. type of microorganism cell wall cell membrane nucleus cytoplasm     key      = present      = absent Which row identifies each type of microorganism?

1. Cells  →  1.1. Cell structure and function

2. Classification  →  2.2. Features of organisms

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29

Two containers, X and Y, were filled with equal amounts of dough mixture for making bread. The mixture in Y had yeast in it. The containers were then left in a warm place for two hours. The diagram shows their appearance after this time. container X container Y dough mixture without yeast dough mixture with yeast Which substance produced by the yeast causes the difference between the dough in X and Y?

18. Biotechnology and genetic modification  →  18.1. Biotechnology

10. Respiration  →  10.1. Respiration

10. Respiration  →  10.3. Anaerobic respiration

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30

Which types of microorganism carry out decomposition in the nitrogen cycle?

19. Relationships of organisms with one another and with the environment  →  19.2. Nutrient cycles

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31

Which actions can be used to control the malarial pathogen?

12. Disease and immunity  →  12.1. Disease

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32

The graph shows the concentration of dissolved oxygen at different points along a river. At which point is sewage emptied into the river?

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

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33

The diagram shows how bees visit a species of flowering plant that has tall spikes of flowers. In the flowers at the base of the spike, the carpels are mature but the anthers are not yet mature. In the flowers at the top of the spike, the anthers are mature but the carpels are not yet mature. anthers are mature; carpels are not mature bees collect pollen carpels are mature; anthers are not mature bees collect nectar and deposit pollen on stigma Which statements are correct?

16. Development of organisms and continuity of life  →  16.3. Sexual reproduction in plants

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34

The diagram shows a section through a dicotyledonous seed. Which structure provides most of the nutrients needed for the seed to grow after germination?

6. Plant nutrition  →  6.2. Leaf structure

16. Development of organisms and continuity of life  →  16.3. Sexual reproduction in plants

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35

Human gametes are different from each other. Which information about male gametes is correct?

16. Development of organisms and continuity of life  →  16.4. Sexual reproduction in humans

16. Development of organisms and continuity of life  →  16.1. Nuclear division

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36

The diagram shows the menstrual cycle. The numbers refer to the number of days after the beginning of menstruation. Which label shows a point in the cycle when implantation is most likely to occur?

16. Development of organisms and continuity of life  →  16.4. Sexual reproduction in humans

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37

A variety of snail has an inherited condition that affects the thickness of the shell. St St have thick shells. St Sn have thin shells. Sn Sn do not survive. Two heterozygous snails are mated. What is the probability that a surviving snail of the next generation is a heterozygote?

17. Inheritance  →  17.3. Inheritance

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38

A man of blood group A and his wife of blood group O had two children, both of blood group A. The man concluded that he must be homozygous for the allele IA, since he thought half his children would be of group O if he were heterozygous. Why was his conclusion unsound?

17. Inheritance  →  17.3. Inheritance

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39

In a garden there is a species of insect which can be either red or green in colour. The green insects are well camouflaged. Birds that eat insects start to live in the garden. The graph shows how the populations of red and green insects then change. number of insects time red insects green insects What is this an example of?

17. Inheritance  →  17.4. Selection

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40

What can be the benefits of genetic engineering of crops?

18. Biotechnology and genetic modification  →  18.2. Genetic modification

18. Biotechnology and genetic modification  →  18.1. Biotechnology

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