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What is a characteristic of all living organisms?
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Which statement about the binomial naming system is correct?
596
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563
Scientists discover a new species of animal.
It has a segmented body with two pairs of legs on each segment.
To which group of animals does this new species belong?
568
548
521
In which part of a cell does photosynthesis take place?
521
591
555
The diagram shows some of the blood vessels and other structures in the human body.
The blood vessels shown are all parts of the same
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514
A photograph shows a plant cell nucleus measuring 2 mm across.
If the magnification of the cell is ×500, what is the actual size of the nucleus?
537
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572
By which process do oxygen and carbon dioxide move between cells and capillaries?
531
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595
Some students investigated osmosis. They placed some dried fruit into a beaker of distilled water. The mass of the fruit was measured at regular intervals during a 24-hour period.
Which graph shows the results?
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Which element is found in proteins but not carbohydrates?
552
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569
Starch is digested by amylase in the mouth, but it is not digested in the stomach. What is the reason for this?
590
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561
A plant with striped leaves was kept in bright light for six hours.
A leaf was taken from the plant and the chlorophyll was removed. The leaf was then tested for starch using iodine solution.
Which diagram shows the result of the test?
581
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Which photomicrograph of the leaf section has been correctly labelled?
540
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In humans, where does most of the absorption of digested food take place?
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What is the cause of the \textit{start} of dental decay?
536
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Which statement correctly identifies the enzyme and the products of fat digestion?
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The diagram shows one of the stomata of a leaf, and some of the cells that are near it.
During transpiration, what describes the movement of water at X and at Y? [Table_1]
561
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573
A plant shoot is placed in a solution of dye. The dye moves up the stem. Under which conditions will the dye move most slowly?
526
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592
Through which blood vessels does blood flow into the heart?
1. pulmonary artery
2. pulmonary vein
3. vena cava
4. aorta
516
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The diagram shows a cross-section through a human blood vessel.
Which type of blood vessel does the diagram show?
551
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What is a function of some white blood cells?
591
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553
The diagrams show the depth and rate of breathing in a person at 12:00 and 13:00.
What happens to the person’s breathing between 12:00 and 13:00?
559
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530
The table shows some products of respiration.
Which row shows the products of anaerobic respiration in muscles?
[Table_1]
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A student carried out an experiment to investigate the effect of temperature on the volume of urine produced.
Which row shows the experiment where the environmental temperature was increased from 20 °C to 40 °C but no other changes were made?
[Table_1]
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A student's eyes blinked as a ball flew past their head. This is a reflex action.
Which row describes the reaction shown by the student?
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What type of cell must an organ contain to detect a stimulus?
500
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The diagram shows the position of the kidneys in a human. Each kidney has an endocrine gland above it.
Which glands are shown?
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510
Why are people advised not to drive a car after drinking an excessive quantity of alcohol?
570
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519
Which statement about the process of asexual reproduction is correct?
594
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545
Scientists studied the effect on infant birthweight of mothers smoking tobacco. They compared their findings with the birthweights of infants from non-smoking mothers. The results are shown in the bar chart. Which statement describes what this bar chart shows?
588
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577
Changes occur in a boy’s body at puberty; his height increases, more muscle develops and body hair grows. Which hormone stimulates these changes?
550
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523
By which process is genetic information transmitted from generation to generation?
516
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561
Some reptiles can lose and regrow their tails to avoid predation. Which process occurs to regrow the tail?
504
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564
What is an adaptive feature of an organism?
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The diagram shows the energy flow through part of a biological system.
What should be in the box labelled 1?
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572
Human activities are changing the carbon dioxide concentration in the atmosphere.
Which activities will increase the carbon dioxide concentration in the atmosphere?
1. burning fossil fuels
2. burning cut-down trees
3. fossilisation of cut-down trees
4. planting replacement trees
566
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Which description of a population is correct?
553
533
594
What is an example of genetic engineering?
571
516
591
What happens when deforestation takes place?
544
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536
