No questions found
The diagram shows a leaf on a plant.
Which characteristic of life is represented by this diagram?
527
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578
The diagram shows how Homo sapiens (modern people) could have evolved from earlier ancestors.
Which statement about modern people and their ancestors is correct?
577
566
572
The diagram shows an insect.
What is the insect?
1. insect has no wings ....................................... go to 2
insect has wings ........................................... go to 3
2. legs longer than, or as long as the body ......... A
legs shorter than the body .............................. B
3. abdomen long and thin .................................. C
abdomen shorter and wider ......................... D
506
533
513
Which features are possessed by all plant cells?
[Table_1]
528
583
548
Which organ is part of the digestive system?
547
542
522
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?
500
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505
The apparatus shown was set up.
Some hours later, the water in the beaker had turned blue, and the liquid in the glass tube had moved upwards.
Which processes caused these changes?
533
524
572
Four solutions were tested to see whether they contained protein, starch or glucose.
The colours of the solutions after the tests are recorded in the table.
Which solution contained protein and glucose but not starch?
[Table_1]
540
553
570
Small molecules are used as the basic units in the synthesis of large food molecules.
Which statement is correct?
522
580
586
Which graph shows the effect of pH on enzyme activity?
528
547
540
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?
548
562
544
The diagram shows a cross-section of a leaf as seen under a microscope. Which structure is a palisade mesophyll cell?
577
522
600
The chart is used to find a person’s recommended mass. For the data provided about body mass and height, which person would benefit most from the introduction of a calorie-controlled diet and regular exercise? [Table_1]
589
504
595
The following statements are about enzymes.
1. enzymes are catalysts
2. enzymes are proteins
3. enzymes are used up during chemical reactions
Which statements are correct?
525
531
550
The diagram shows a human tooth with an area of decay.
What is likely to have caused the decay?
553
539
596
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?
504
582
570
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?
569
596
524
The diagram shows a section of a human vein.
What is the function of the part labelled X?
518
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504
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?
[Table_1]
500
531
525
The diagram shows one way the body defends itself against pathogens.
What is the name of this defence mechanism?
557
571
503
What is the approximate percentage of oxygen in expired air?
584
501
576
Potted plants are left for a week in a tank of water as shown.
Why do the plants die?
553
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512
The diagram shows two experiments investigating gas exchange in small aerobic crustaceans.
Soda lime absorbs carbon dioxide.
Which way does the liquid marker move?
556
501
526
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?
522
566
594
Which substances are excreted by humans?
[Table_1: Key with substances and excretion indicators (✔ = involved, ✘ = not involved)]
524
580
575
The diagram shows a simple reflex arc.
Which labelled part is the sensory neurone?
550
503
584
Some structures in the eye are listed.
1 cornea
2 iris
3 lens
4 retina
Which structures contain light receptors?
507
542
600
Which type of drug is used to treat bacterial infection?
502
538
501
The diagram shows a section of an insect-pollinated flower. Which structure is the anther?
529
584
579
In humans, what is an example of a secondary sexual characteristic in both males and females?
598
512
507
Which contraceptive method could provide protection from sexually transmitted infections?
536
542
568
Which human characteristics are inherited? [Table_1]
575
508
562
A rabbit has 44 chromosomes in each of its body cells.
Which row correctly describes the gamete cells?
[Table_1]
581
573
597
Which definition of continuous variation is correct?
564
558
583
When is evolution by natural selection most likely to occur?
508
595
507
What process uses the principal source of energy input to biological systems?
587
520
562
The diagram shows an aquatic food web.
Which statement is correct?
565
505
537
Why are bacteria useful in biotechnology and genetic engineering?
537
593
557
What is a description of genetic engineering?
596
539
556
Large areas of tropical forests have been cleared to grow monocultures of palm oil plants.
Which effect will this have on the ecosystem?
514
538
532
