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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?
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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
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The diagram shows a section through a root.
What are the levels of organisation of the labelled structures?
[Table_1]
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562
Which characteristics are correct for both osmosis and diffusion? [Table_1]
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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]
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589
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?
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570
Four test-tubes are set up as shown. Which test-tube contains the most carbon dioxide after one hour?
530
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The diagram shows a cross-section through a leaf.
Which tissue is the cell labelled X part of?
589
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In plants, which ions are used to make amino acids?
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Which condition can be caused by a deficiency of vitamin C?
528
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In which structure does storage and assimilation occur?
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The diagram shows a human tooth. Which statement best describes the function of this tooth?
546
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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]
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The diagrams show cross-sections through a root and a stem.
Which labels are correct?
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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?
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554
What is an example of a transmissible disease?
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554
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?
553
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586
Which statements about aerobic respiration are correct? [Table_1]
534
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The diagram shows some organs in the human body. In which part are amino acids broken down to form urea?
573
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The diagram shows the skin.
Which labelled structure releases sweat?
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The diagram shows a plant shoot growing towards light.
Which response is shown by the shoot of the plant?
503
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Which row correctly describes the type of plant reproduction that involves pollination?
[Table_1]
594
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577
The diagram shows half a flower. Which structure is the stigma?
582
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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?
517
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The diagram shows four types of birth control device.
Which is not a barrier method of contraception?
586
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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]
579
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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.
567
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The graph shows the masses of two different types of tomato.
What can be concluded from the graph?
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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
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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
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The diagram shows part of the carbon cycle.
In which labelled stages is respiration occurring?
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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?
524
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Which is a reason for using bacteria in biotechnology?
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Why is yeast used in breadmaking?
543
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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?
521
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