No questions found
Which process do living organisms use to remove excess carbon dioxide from their bodies?
501
594
526
The photograph shows an elephant hawk-moth.
Using the features visible in the photograph, to which group of arthropods does the elephant hawk-moth belong?
507
525
514
What does the term species mean?
546
551
571
The image shows an animal.
The length of the animal in the image is 36 mm.
The actual length of the animal is 12 mm.
What is the magnification of the image?
561
578
550
The diagram shows a plant cell.
Which features show that it is a plant cell?
576
588
564
A scientist investigates the effect of two types of antibiotics on bacteria.
The table shows the results.
[Table_1]
Which cell structure does each antibiotic affect?
582
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528
The diagram shows a section through an alveolus and through a capillary.
How does carbon dioxide move from Y to X?
505
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578
In which row will the diffusion of ions into a cell be the quickest?
[Table_1]
598
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573
Large biological molecules are made of smaller molecules.
Which row correctly matches the large molecule with the smaller molecules?
[Table_1]
593
538
556
A student tests a solution for protein.
Which row shows the correct food test and a positive result?
[Table_1]
520
589
511
What is a correct statement about enzymes?
587
531
559
Which statement about enzyme action is correct?
519
528
521
The graph shows the results of an experiment that investigated the effect of light intensity on the rate of photosynthesis.
What are the labels for the $x$-axis and the $y$-axis?
[Table_1]
537
512
543
The diagram shows a cross-section of a leaf.
Which type of cell controls the entry of carbon dioxide into the leaf?
557
514
578
The table shows vitamins that should be included in a balanced diet.
Which row shows the correct use in the body and food source for one of these vitamins?
[Table_1]
545
586
599
Which substance is an ion that is used to make chlorophyll?
557
572
591
What is the function of the gall bladder?
547
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511
The diagram shows the different types of teeth found in the upper jaw of a human.
They are in the same order as they are found in the jaw.
Which type of tooth is circled?
532
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518
A person ate food X. Chemical digestion of food X occurred in the mouth and small intestine but not in the stomach.
What was in food X?
513
598
547
What is present in a vascular bundle?
597
524
512
What is the pathway taken by water from the soil to the leaf?
502
578
579
What are methods for monitoring the activity of the heart?
[Table_1]
582
593
547
The diagrams show four different types of cells.
Which cell contains haemoglobin?
574
561
529
What is a direct way of transmitting a pathogen?
505
530
586
The diagram shows the breathing system.
Which structure is the diaphragm?
560
503
531
What is the word equation for aerobic respiration?
547
592
586
Which diagram of the excretory system is labelled correctly?
558
576
566
The diagram shows an iris and a pupil in different light conditions.
Which characteristic of living organisms is this an example of?
585
519
576
Where is insulin secreted, and what is its effect on blood glucose concentration?
[Table_1]
530
504
529
The graph shows the number of cases of MRSA in one country between 2001 and 2006.
Between which years was the greatest change in the number of cases of MRSA?
566
547
594
Which row describes an insect-pollinated flower?
[Table_1]
596
566
578
Which part of the female reproductive system releases egg cells?
553
578
532
Which adaptive feature of sperm provides the energy that enables it to swim?
523
531
518
What is a use of yeast in biotechnology?
509
529
534
Many mammals have coloured fur and many birds have coloured feathers.
Which uses of colour could help males survive long enough to pass on their features to their offspring?
[Table_1]
559
501
586
The list shows statements about selection.
1 Individuals reproduce and pass on their alleles to the next generation.
2 Genetic variation exists between individuals and many offspring are produced.
3 Individuals struggle for survival and compete for resources.
4 Individuals that are better adapted to the environment survive.
5 Individuals with desirable features are selected by humans.
Which statements are correct descriptions of natural selection?
513
544
566
Some of the processes involved in the carbon cycle are listed.
1 combustion
2 decomposition
3 photosynthesis
4 respiration
During the carbon cycle, which processes release carbon dioxide into the atmosphere?
561
582
547
What are the effects of sewage pollution on the biodiversity and the number of bacteria in a river?
[Table_1]
519
599
580
The increase of which gases contributes to an enhanced greenhouse effect?
528
504
600
Why are bacteria used in biotechnology?
579
580
535
