No questions found
The diagram shows what happened in an experiment with plant seedlings.
Which characteristic of living things made the seedlings grow towards the light?
502
590
590
A rat has the scientific name Rattus rattus.
What do the two parts of this name refer to?
598
503
584
An animal can swim, has a backbone and produces milk. To which group does it belong?
571
514
525
The diagram shows two guard cells. Which label shows the cell wall?
536
576
557
What is the correct order to describe an increasing level of organisation?
546
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540
Which diagram shows the appearance of a plant cell several minutes after it has been placed in a concentrated solution of sugar?
514
511
572
The apparatus shown is used to demonstrate osmosis.
The mass of the dialysis tubing and contents was 11.2g at the start of the demonstration and 9.4g at the end.
Which solutions would cause this change in mass?
547
578
563
Which food-testing solution shows a positive result when it turns from blue to purple?
539
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536
Four test-tubes are set up as shown.
Which test-tube contains the least carbon dioxide after one hour?
575
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566
Which substance found in a healthy diet helps to prevent constipation?
557
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502
The activity of amylase is measured in four parts of the alimentary canal.
Which two parts have the most amylase activity?
545
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541
After passing through the root hair cells of a plant, what is the next tissue through which water passes?
587
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571
From which part of a leaf does most water evaporate during transpiration?
500
561
530
Which blood vessel carries blood to the muscle of the heart?
574
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529
The diagram shows a section through the heart and its blood vessels.
Which row gives the vessel name and the direction of blood flow in vessel X?
598
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519
What is a chemical barrier to pathogens?
580
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570
What is the approximate percentage of oxygen contained in the air breathed out of the lungs?
513
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522
The diagram shows an experiment to investigate the respiration of yeast. Oil prevents oxygen entering the glucose and yeast suspension.
If no oxygen is present in the glucose and yeast suspension, what will occur?
500
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579
What happens during respiration in germinating seeds?
515
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569
Which row describes the urine produced by a person who is exercising on a hot day?
[Table_1]
525
532
592
What is the function of the optic nerve?
581
513
563
What causes the development of female secondary sexual characteristics?
531
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578
The diagram shows a cross-section of the skin. Which part produces a substance which cools the skin when it evaporates?
525
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514
Gravitropism and phototropism are names given to specific plant growth responses. How do shoots and roots normally respond?
[Table_1]
590
543
509
Which type of infection could be treated successfully with antibiotics?
[Table_1]
570
500
583
What takes place during fertilisation?
554
522
523
What is the transfer of pollen from an anther to a stigma called?
567
513
519
What happens to the uterus lining during menstruation?
519
574
578
The diagram of the female reproductive system shows where different methods of birth control can be used.
Where would an IUD be placed?
564
553
513
What is defined as a length of DNA that codes for a protein?
512
548
504
When damaged tissues are repaired cells undergo division by
558
541
524
Pea plants produce either yellow or green seeds. Yellow (Y) is dominant to green (y).
What are the most likely phenotypes of the offspring of a cross between YY and Yy plants?
513
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530
The graph shows the masses of two different types of tomato. What can be concluded from the graph?
528
528
590
The diagram shows a simple food chain.
grass \( \rightarrow \) gazelle \( \rightarrow \) lion
The arrows show the energy flow through the food chain.
Where does the grass obtain its energy?
574
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599
The diagram shows a food chain in a rock pool.
seaweed → whelks → crabs → seagulls
What will happen if the number of secondary consumers increases?
There will be
543
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574
What is the role of anaerobic respiration in bread-making?
532
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593
A crop plant has been genetically modified to make it resistant to herbicides. Which is a possible disadvantage of introducing this new crop plant?
595
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511
Which is an example of an undesirable effect of deforestation?
579
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520
Wheat is often grown in large areas as a monoculture. What is a negative environmental impact of this method of farming?
508
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564
