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What are excretion, sensitivity and reproduction characteristics of?
506
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540
The photograph shows an organism. Which visible feature can be used to classify this organism as a bird?
558
532
503
The diagram shows an arthropod.
Which features are characteristic of all arthropods?
598
534
550
Which statement about cell structure is correct?
583
503
521
The photograph shows a limpet. The length of line PQ on the image is 65 mm. What is the actual diameter of the limpet along line PQ?
570
548
595
By which process does oxygen pass out of a leaf?
535
519
525
A tuber from a potato plant was cut into pieces of identical length. The pieces of potato were placed in four different solutions for three hours.
1. pure water
2. a sugar solution that is less concentrated than the potato cell contents
3. a sugar solution that is more concentrated than the potato cell contents
4. a sugar solution that is the same concentration as the potato cell contents
Which solutions will cause the pieces of potato to change in length?
586
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595
Which row shows the features of active transport? [Table_1]
585
566
547
Four different foods were tested to find out what they contained. The results are shown in the table. Which food contains protein but \textbf{not} reducing sugar or starch? [Table_1]
578
577
509
What is a characteristic of all catalysts?
503
592
508
This sequence of diagrams shows how an enzyme works. Which labelled part is the active site?
581
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567
Four test-tubes are set up as shown and left in bright sunlight. After several hours, which test-tube contains the most oxygen?
523
557
564
Which statement about photosynthesis is correct?
504
548
520
In humans, which two components of the diet can be broken down to release energy?
582
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600
Which is a part of the small intestine?
544
514
522
Which of these is digested by protease?
538
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570
A stem was cut from a plant. The base of the stem was placed into a beaker containing water and a red stain for two hours. The diagram shows a cross-section of the plant stem. In which tissue will the red stain be found and what is the name of the tissue?
533
523
515
Which pair of processes causes transpiration in plant leaves? [Table_1]
552
504
589
The diagram shows a section of the human heart. Which label identifies the right ventricle?
528
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511
The diagrams show sections through three types of blood vessel. They are not drawn to the same scale.
In which order will red blood cells flow through these vessels in the human body when travelling from the aorta to the right atrium of the heart?
535
536
597
In some animals, gas exchange occurs through the skin. What are the most likely characteristics of the skin in these animals? [Table_1]
540
538
525
The diagram shows an alveolus and part of a blood vessel. The arrows show the direction of movement of gases. Which arrows represent oxygen only and carbon dioxide only?
578
500
567
Which row about aerobic respiration is correct? [Table_1]
538
517
599
What is a product of anaerobic respiration in yeast?
501
574
554
Which part of the diagram of the excretory system is the urethra?
566
581
546
The diagram shows seedlings in two experiments on the tropic response of seedlings to gravity and light. Which stimuli have the seedlings responded to?
584
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542
The diagram shows a wind-pollinated flower.
Which labels are the stigma and anther?
507
538
536
What is the process when a pollen nucleus fuses with the nucleus in an ovule?
592
541
529
During puberty, secretion of hormones causes the development of secondary sexual characteristics. What is a characteristic caused by the secretion of testosterone?
584
542
533
Which type of organism causes AIDS?
570
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589
The graph shows the frequency of a human characteristic, X.
Which characteristics can be represented by X?
[Table_1]
Table Key:
✓ = yes
✗ = no
584
557
586
Which row shows some of the features involved in natural selection? [Table_1]
599
562
536
Which statement is correct?
595
572
515
In a species of mammal, black fur colour is dominant and brown fur colour is recessive.
Two parents with black fur produce offspring which all have black fur. Later that year, the same parents produce more offspring. One of these offspring has brown fur.
Which statement about fur colour is correct?
563
563
521
What is an example of a characteristic that shows discontinuous variation in humans?
543
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500
Where does the energy being transferred along a food chain originally come from?
569
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563
Which diagram shows energy passing along a food chain?
583
510
542
The diagram shows a pyramid of biomass for all the organisms in an ecosystem. Which organisms are carnivores?
582
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550
Three human activities are listed.
1. burning fossil fuels
2. deforestation
3. replanting forests
Which activities can cause the change shown in the graph?
569
555
551
What is a reason for using bacteria in biotechnology?
521
589
559
