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The diagram shows a plant. Which characteristic of living organisms is shown by the plant in the diagram?
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Using the binomial system of naming organisms, the name of the lion is *Panthera leo*. Which statement is correct?
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The table shows the number of animals collected in a sample from a woodland and the groups to which they belong.
[Table_1]
How many arthropods in total, in this sample, have six or eight legs?
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Which features do animal cells share with plant cells? [Table_1]
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The diagram shows an animal.
Use the key to identify the animal.
1 wings present ............................... go to 2
wings absent ............................... go to 3
2 one pair of wings visible ......................... A
two pairs of wings visible ......................... B
3 three pairs of legs ................................. C
four pairs of legs ................................. D
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At which level of organisation is a root?
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What is an example of diffusion?
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Which identifies the chemical elements found in proteins?
[Table_1]
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What is the correct definition of the term *enzyme*?
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Two sealed test-tubes containing aquatic plants and hydrogencarbonate indicator were set up.
The indicator in the sealed test-tubes shows the concentration of dissolved carbon dioxide present.
[Table_1: Concentration of carbon dioxide]
One of the sealed test-tubes was kept in the light for 24 hours and one of the sealed test-tubes was kept in the dark for 24 hours.
The results are shown in the table.
[Table_2: Test-tube results]
What is the correct explanation of what has taken place?
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The diagram shows a leaf as seen in cross-section under the microscope.
What are tissues 1, 2 and 3?
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The pie charts show the composition of 100g of four different foods.
Which food provides the most energy?
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The diagram shows the teeth of the lower jaw of a human. Which tooth is a premolar?
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The diagram shows an experiment kept at room temperature.
What is present in the water surrounding the membrane after 45 minutes?
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The diagrams show cross-sections through four roots.
Which root is best adapted for absorbing water from the soil?
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The diagram shows a vertical section through a human heart.
What are X and Y?
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The diagram shows human blood cells, as seen under a microscope. What is the function of cell X?
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A pathogen is defined as
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Which row shows the approximate percentage of gases in expired air?
[Table_1]
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Mammals maintain a constant body temperature.
What process must occur continuously to maintain a constant body temperature?
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Which process releases the most energy from one molecule of glucose?
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The diagram shows a simple reflex arc.
What is the correct order of events after the knee is tapped?
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Which type of cell is found in sense organs?
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What is meant by the term \textit{tropism}?
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A patient has dye injected into the blood supply to his kidneys. The dye appears in his excretory system as shown.
Which part is blocked?
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The diagram shows the effect of four different antibiotics, A, B, C and D, on the growth of bacteria. Which antibiotic are the bacteria most resistant to?
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Excess alcohol affects the body.
Which statement explains the risk of driving after consuming excessive alcohol?
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To which part of the flower is pollen transferred in pollination?
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The table shows some of the stages that happen during labour and birth. What is the correct order? [Table_1]
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The table shows the percentage effectiveness of four methods of contraception when used correctly.
[Table_1]
What would be the expected percentage of unplanned pregnancies if the surgical method of contraception was used?
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The diagram shows part of a genetic diagram for the inheritance of sex in humans.
parents father mother
gametes P
offspring male female
What are the sex chromosomes in gamete P and the male offspring?
[Table_1]
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A mouse with grey hair breeds with a mouse with white hair, producing offspring with genotypes Bb, Bb, bb and bb. (B represents the dominant allele for grey hair, and b represents the recessive allele for white hair.)
Which correctly describes the genotypes of the parents?
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The following features were observed in a pair of identical twins.
[Table_1]
Which features show phenotypic variation?
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Which statement about selective breeding is correct?
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Which diagram shows energy passing along a food chain?
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Which organisms remove carbon dioxide from the atmosphere?
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Which feature of bacteria makes them especially useful in biotechnology?
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Which process makes use of a genetically engineered organism?
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What are the possible effects of deforestation? [Table_1]
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The bloodworm is an organism that is found in heavily polluted water.
The diagram shows where raw sewage flows into a river.
Where would there be fewest bloodworms?
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