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Which characteristic do all living organisms show?
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The diagram shows some animal cells, as seen under the microscope. What will be present at X?
75
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The diagram shows an animal.
What is the animal?
1. animal with a vertebral column ........................................ vertebrate
animal with an exoskeleton ........................................ go to 2
2. no distinct head, thorax and abdomen ...................... A
distinct head, thorax and abdomen ............................ go to 3
3. eye occupies less than one third of the head .............. B
eye occupies more than one third of the head ............. go to 4
4. wings are wider than they are long .................................... C
wings are longer than they are wide ................................... D
78
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The diagram shows a section through a root.
What are the levels of organisation of the labelled structures?
[Table_1]
80
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Which characteristics are correct for both osmosis and diffusion? [Table_1]
79
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The table shows the results of some food tests.
Which row shows a food containing both protein and starch?
[Table_1]
77
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The diagrams show an experiment on enzyme activity.
The test-tubes contain hydrogen peroxide and the enzyme catalase.
In which test-tube is the enzyme inactive?
79
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Four test-tubes are set up as shown. Which test-tube contains the most carbon dioxide after one hour?
74
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The diagram shows a cross-section through a leaf.
Which tissue is the cell labelled X part of?
74
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In plants, which ions are used to make amino acids?
78
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Which condition can be caused by a deficiency of vitamin C?
77
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In which structure does storage and assimilation occur?
77
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The diagram shows a human tooth. Which statement best describes the function of this tooth?
73
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To protect some medicines from the effect of gastric juice some tablets are coated with a starch-like substance.
Which enzyme digests the coating and what is produced by this action?
[Table_1]
69
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The diagrams show cross-sections through a root and a stem.
Which labels are correct?
71
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A piece of blue cobalt(II) chloride paper is clipped to the lower surface of a fresh leaf and is then covered with plastic, as shown. After a few minutes, part of the paper turns pink, showing that water is present.
Which process carried out by leaves causes the paper to turn pink?
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The diagram shows a section through the mammalian heart.
Which labelled structures are arteries?
73
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What is an example of a transmissible disease?
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What is a disease-causing organism called?
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The diagram shows part of the human gas exchange system.
Where does the exchange of gases between air and blood take place?
81
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Which statements about aerobic respiration are correct? [Table_1]
78
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The diagram shows some organs in the human body. In which part are amino acids broken down to form urea?
75
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What is a synapse?
77
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The diagram shows the skin.
Which labelled structure releases sweat?
70
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The diagram shows a plant shoot growing towards light.
Which response is shown by the shoot of the plant?
72
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Which row correctly describes the type of plant reproduction that involves pollination?
[Table_1]
75
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The diagram shows half a flower. Which structure is the stigma?
67
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A typical menstrual cycle consists of 28 days, with day 1 being the start of menstruation. On which day is the lining of the uterus thickest?
78
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The diagram shows four types of birth control device.
Which is not a barrier method of contraception?
65
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The diagram shows the production of a human fertilised egg cell which develops into a male.
Which row shows the sex chromosomes in the cells?
[Table_1]
69
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Which statements about mitosis are correct?
1. Mitosis produces genetically identical cells.
2. Mitosis produces genetically different cells.
3. Mitosis produces gametes.
4. Mitosis produces body cells.
72
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The graph shows the masses of two different types of tomato.
What can be concluded from the graph?
75
58
Which of these is a population?
1. all the insects in a rainforest
2. all the tigers in a rainforest
3. all the kapok trees in a rainforest
82
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The diagram shows a food chain in a rock pool.
seaweed → whelks → crabs → seagulls
What will happen if the number of secondary consumers increases?
There will be
64
51
The diagram shows part of the carbon cycle.
In which labelled stages is respiration occurring?
72
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The graph shows the changes in the populations of predator and prey over a period of time. Which point on the graph shows a decrease in predator population?
67
50
Which is a reason for using bacteria in biotechnology?
75
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Why is yeast used in breadmaking?
66
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The graph shows the levels of dissolved oxygen and mineral ions in a river.
At which point does raw sewage enter the river?
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