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What are the characteristics of bony fish? [Table_1]
118
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What are the features of the leaves of a plant that is a eudicotyledon (dicotyledon)?
[Table_1]
132
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Many snakes that belong to the viper family are unusual in that they give birth to live young.
This is usually a characteristic of which vertebrate group?
114
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Use the key to identify which group is amphibians.
1 hair present .......................................... mammals
hair absent ......................................... go to 2
2 feathers present .................................. group A
feathers absent ................................ go to 3
3 dry scaly skin..................................... group B
moist skin ......................................... go to 4
4 four limbs .......................................... group C
no limbs ............................................ group D
70
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The diagram shows a liver cell.
Which features are present in this cell and also in most plant cells?
76
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Which structure is present in a root hair cell but not in a liver cell?
140
60
Which description of the heart is correct?
70
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The diagram shows four cells.
76
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The diagrams show how a cell appears under the microscope at the start of an experiment and after it has been placed in a dilute solution of salts for 5 minutes.
Which statement explains what happens?
130
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The diagram represents the molecules in two solutions either side of a fully permeable membrane.
In which directions are the net movements of the molecules?
110
50
Which group of compounds ensures that metabolic reactions take place effectively?
131
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Four different foods were tested for their composition. The results are shown in the table. Which food contains protein but not reducing sugar or starch? [Table_1]
133
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What are the smaller basic units of starch and glycogen molecules? [Table_1]
120
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A plant with striped leaves similar to the one below was kept in bright light for six hours.
[Image_1: Diagram of leaf with white and green stripes]
A leaf was taken from the plant and the chlorophyll removed. It was then tested for starch using iodine solution.
Which diagram shows the result of the test?
119
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Which substances are transported in the phloem?
70
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The diagrams show some components of the blood of a mammal.
Which component causes the blood to start clotting?
122
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Where are hormones removed from the blood and broken down in the human body?
71
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The list shows four metabolic processes.
1. carbon dioxide + water $\rightarrow$ glucose + oxygen
2. glucose $\rightarrow$ alcohol + carbon dioxide
3. glucose $\rightarrow$ lactic acid
4. glucose + oxygen $\rightarrow$ carbon dioxide + water
Which of these processes occur in muscles?
130
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The diagram shows apparatus used to investigate anaerobic respiration in yeast.
What happens to the coloured liquid?
116
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The diagram shows some of the structures in a human lung.
Where is the carbon dioxide concentration highest?
131
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Where is urea produced in the human body and from which chemicals is it produced? [Table_1]
126
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The table shows the composition of a liquid found in the human body.
[Table_1]
In a healthy person, which structure contains this liquid?
71
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The diagram shows muscles and bones in a person's arm.
What happens to the muscles as the weight is lowered?
80
60
In an experiment to investigate phototropism, a plant shoot is grown with light coming from one side only. After two days, in which region has the greatest rate of growth occurred?
128
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Which structure is involved in the transfer of dissolved nutrients from the mother to the fetus?
121
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The diagram shows the human female reproductive system.
After ejaculation, along which route does a male gamete travel to fuse with an egg?
72
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Which set of conditions is required for seed germination? [Table_1]
73
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The graph shows the height of a child, from birth to the age of 10.
What was the approximate height of the child at 7 years of age?
129
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What results from meiosis of a diploid cell?
122
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Which pathway is taken by energy from the Sun?
135
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The diagram shows a food web including a producer, consumers and a decomposer. Which organism is the decomposer?
133
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The diagram shows a food chain.
If the hawks are removed from this food chain, what is likely to happen to the numbers of the other organisms in this chain?
114
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Which organisms remove carbon dioxide from the atmosphere?
116
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The diagram shows a simple water cycle.
What is responsible for water loss from the tree?
62
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Which process is not part of the carbon cycle?
73
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Which factors affect the rate of growth of a plant population?
[Table with factors: disease, grazing by herbivores, light intensity]
124
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What is a reason for conserving plant species?
125
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What is reduced after deforestation?
122
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The diagram shows four positions on a river where water samples were taken.
Which graph shows oxygen concentrations in the river?
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