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What is a characteristic of all living organisms?
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The scientific names of some animals are listed.
1. _Camelus dromedarius_
2. _Camelus ferus_
3. _Equus ferus_
4. _Struthio camelus_
Which animals are in the same genus?
548
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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?
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The diagram shows a single-celled organism called Euglena.
Which labelled structures would also be found in an animal cell?
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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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A photograph shows a plant cell nucleus measuring 2 mm across.
If the magnification of the cell is \times 500, what is the actual size of the nucleus?
597
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By which process do oxygen and carbon dioxide move between cells and capillaries?
506
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A cylinder of potato tissue was placed in a beaker of very salty water. After one hour the mass of the potato cylinder had decreased.
Why did this happen?
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Which element is found in proteins but not carbohydrates?
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599
Starch is digested by amylase in the mouth, but it is not digested in the stomach. What is the reason for this?
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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?
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The diagram shows a section through the leaf of a plant. Which label shows a palisade mesophyll cell?
531
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In humans, where does most of the absorption of digested food take place?
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What are the products when proteins are broken down?
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Where does most of the absorption of water take place in the alimentary canal?
577
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538
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?
[Table_1]
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What are the main vessels carrying blood to and from the kidney? [Table_1]
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The diagram shows a cross-section through a human blood vessel.
Which type of blood vessel does the diagram show?
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528
What is a function of some white blood cells?
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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?
591
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The list shows some processes that take place in a human body.
1. production of new red blood cells
2. transmission of nerve impulses from the eyes to the brain
3. diffusion of gases into and out of the lungs
Which processes use energy released by respiration?
503
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500
What is produced by anaerobic respiration in humans? [Table_1]
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526
Which statement about urea is correct?
589
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545
What is the sequence of neurones connecting a receptor to an effector in a reflex arc?
597
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513
What controls how much light enters the eye?
541
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Which row matches each hormone to its function? [Table_1]
518
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539
Scientists carried out a survey on the effect of giving up smoking on the risk of developing lung cancer. The results are shown in the graph.
The scientists made three conclusions:
1 Stopping smoking reduces the risk of developing lung cancer.
2 Age increases the risk of lung cancer for smokers and non-smokers.
3 The earlier people stop smoking, the lower the risk.
Which conclusions are correct?
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A gardener wants to produce many genetically identical plants from a single plant. The diagram shows different methods of growing new plants.
Which methods will produce plants that are genetically identical to the parent plant?
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Which structure in the male reproductive system makes the fluid for sperm to swim in?
558
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The graph shows a woman’s body temperature during the menstrual cycle.
On which days is the woman most likely to become pregnant?
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What is the transmission of genetic information from generation to generation called?
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Which diagram shows the results of the process of mitosis?
533
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510
The graph shows the distribution of blood groups in one area.
This is an example of discontinuous variation.
Which statement about discontinuous variation is correct?
547
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The diagram shows a food web in a desert.
Which organisms are all secondary consumers?
529
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578
The diagram shows stages in the water cycle.
Which process is represented by the letter X?
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What is an example of a population?
512
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536
What is a use of pectinase in the food industry?
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558
Which factors are believed to have contributed to the rise in sea levels?
524
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531
