No questions found
Carbon dioxide diffuses into a leaf. Which characteristic of living things requires this?
567
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539
The diagram shows how *Homo sapiens* (modern people) could have evolved from earlier ancestors.
Which statement about modern people and their ancestors is correct?
503
510
544
The diagram shows an animal.
Using the key, what is the animal?
1 has three pairs of legs .............................. go to 2
has four pairs of legs .............................. go to 3
2 has wings .................................. A
has no wings .............................. B
3 large claws (pedipalps) .................... C
no large claws (pedipalps) .................... D
567
551
529
Which features are possessed by all plant cells?
[Table_1: A table showing presence (✓) or absence (✗) of features in plant cells: a cell wall and chloroplasts.]
570
558
512
Which group of organs belongs to the same organ system?
586
518
511
The diagram shows a test-tube containing clear jelly. A drop of blue ink is injected into the middle of the jelly.
The blue colour of the ink spreads throughout the jelly.
By which process does the blue ink spread through the jelly?
517
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544
Which process describes osmosis?
583
513
537
Which row shows the chemical elements contained in fats?
[Table_1]
589
589
535
Small molecules are used as the basic units in the synthesis of large food molecules. Which statement is correct?
561
512
597
Which graph shows the effect of pH on enzyme activity?
539
580
576
The diagram shows an experiment to investigate the balance between respiration and photosynthesis. In which tube are photosynthesis and respiration taking place at the same time?
520
563
585
The diagram shows how sewage is treated. Why is air bubbled through the aeration tank?
567
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594
The food label is from a packet of cereal. The label can help someone who is concerned about their diet.
[Table_1]
A person eats 45 g of cereal.
One of the food types listed in the label can help prevent constipation.
How many grams of this food type does the person eat?
526
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511
Digested food molecules move into the cells of the body where they are used and become part of the cells. What is this a definition of?
503
532
552
The diagram shows a human tooth with an area of decay.
What is likely to have caused the decay?
529
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527
A celery stalk was placed into a beaker of blue dye. When the dye reached the leaves, the stalk was taken out and a section was cut, as shown in the diagram.
Which diagram shows the appearance of the cut end of the stalk?
527
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576
The table shows the rate of water flow through a tree over a 12 hour period.
[Table_1]
What conclusion can be drawn from the table?
582
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512
How does the transport system of a human differ from the transport system of a tree?
[Table_1]
586
517
515
The diagram shows cross-sections through three types of blood vessel, not drawn to the same scale.
Which section is from a vein and which is from a capillary?
548
571
559
What is the approximate percentage of oxygen in expired air?
563
548
520
Which pathway is followed by air passing into the body?
541
516
600
The diagram shows two experiments investigating gas exchange in small aerobic crustaceans.
Soda lime absorbs carbon dioxide.
Which way does the liquid marker move?
580
567
515
Yeast is placed inside a container full of a glucose solution with no air. Which word equation summarises the process that takes place inside the container?
542
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527
Where is urea formed and excreted? [Table_1]
519
578
555
Which structure is an effector?
580
575
539
When we get hot and the temperature of our blood rises, one of the ways we can cool down is by sweating.
What detects the rise in temperature of the blood?
594
583
588
A person suffering from influenza was given antibiotics. Influenza is caused by a virus.
Why did the antibiotics not cure the person with influenza?
523
541
539
Which parts of the gametes fuse during fertilisation?
536
558
587
Which environmental conditions must be present for germination?
600
574
545
What happens to the lining of the human uterus in the days before the release of an egg cell?
589
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595
Which word describes an individual who has two identical alleles for a particular gene?
579
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One type of night-blindness is an inherited condition, caused by a dominant allele.
The chart shows how this condition was passed on in one family.
Person X marries someone with normal sight.
What is the chance that their first child will have night-blindness?
503
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561
The diagram shows the percentage of tongue rollers and non-rollers in a human population.
Which word describes this type of variation?
503
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502
The diagram shows the average head and ear shapes of rabbits from four different regions. Which is best adapted to living in the coldest region?
592
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547
The food chain shows how energy is transferred to a human.
lettuce → snails → duck → human
Where did the energy in the lettuce come from?
526
515
531
Which process forms part of the carbon cycle?
574
571
593
Which statement correctly explains why bacteria are used in biotechnology?
516
510
503
Which enzyme is used in fruit juice production to make the juice clear?
572
586
562
What is not a reason for using chemical fertilisers in food production?
528
512
577
