No questions found
Which name is given to a group of individuals that can reproduce to produce fertile offspring?
511
586
582
An animal has four legs, hair and a tail.
To which group of vertebrates does it belong?
553
511
525
Root hair cells are found on plant roots.
Which feature is present in a root hair cell but not in a sperm cell?
547
595
537
What is an example of a tissue?
540
521
584
The diagram shows a leaf which has been drawn at a magnification of ×7. What was the actual length of the leaf?
553
537
561
Which statement is about osmosis?
573
546
526
Which row describes active transport?
[Table_1]
524
596
517
Which chemical is used to test for the presence of protein in a food sample?
508
587
551
The equation shows the digestion of protein to amino acids.
In the equation, what is protease?
544
522
572
The graph shows the effect of temperature on the activity of an enzyme.
At which temperature is the enzyme most active?
531
534
564
The substances listed are found in the leaf of a plant.
Which substance is obtained from the soil?
521
569
509
What is the word equation for photosynthesis?
570
565
589
What is the order of the processes that take place when food is eaten?
514
535
533
Dental decay is caused when bacteria break down sugars and produce acids. In which order are the parts of the teeth damaged by acid?
567
509
553
Where is most digested food absorbed?
572
589
595
The diagram shows a bean seedling soon after it has germinated. Where is most water absorbed?
528
579
509
Which process occurs during transpiration?
579
546
550
The diagram shows the outside of a human heart.
Which structure is a coronary artery?
552
548
599
The diagram shows a section of a human vein.
What is the function of the part labelled X?
584
551
576
Campylobacter is a bacterium that can cause food poisoning.
Which word describes Campylobacter?
523
549
541
What is the approximate percentage of oxygen in expired air?
541
519
546
Which actions use energy released from respiration?
1 muscle contraction
2 protein synthesis
3 cell division
4 transmitting nerve impulses
561
512
588
What is the word equation for anaerobic respiration in muscle cells?
563
595
585
Which statement about the formation of urea is correct?
540
558
579
A person moves from a place with dim light to a place with bright light. What will happen to the pupils in the person’s eyes? [Table_1]
561
539
515
Which endocrine gland secretes insulin?
549
535
551
Which factors affect the growth of plants?
532
538
505
The table shows the recommended daily amounts (RDA) of some nutrients for a person with special dietary requirements, and their actual intake of those nutrients.
[Table_1]
What would the person be at risk of developing if they continued with the same daily intake of these nutrients?
515
565
582
What is a possible order of events during labour and birth?
575
582
574
The graph shows the decline in testosterone production in some men as they get older.
At which age is testosterone production at 50 arbitrary units?
583
576
595
What is the most effective barrier method of birth control shown in the table?
[Table_1]
505
523
542
The diagram represents processes in sexual reproduction.
Which processes are represented by the letters P, Q and R?
502
561
585
A fruit grower wants to develop a new disease-resistant fig tree with tastier fruit. She crosses two fig trees and plants the seeds that are produced. She chooses the best plant that grows from the seeds and takes cuttings from it. The cuttings grow into trees that are identical to the chosen plant. Which processes are involved?
578
584
510
The graph shows the frequency of the human characteristic X.
Which characteristics can be represented by X?
[Table_1]
517
599
508
Letters H, J, K and L show the organisms that make up a simple food web.
Which row identifies the types of organism shown in the food web?
532
593
570
The diagram shows part of the water cycle.
Which row identifies the different parts of the water cycle?
573
550
515
What is a possible explanation for the change in the elk population between 1978 and 1992?
548
589
520
The diagram shows part of the carbon cycle. The arrowheads are missing from the diagram so the direction of movement of carbon is not shown.
[Diagram: fossil fuels → plants → animals → bacteria → carbon dioxide in the atmosphere]
How many arrows should point **towards** the box labelled carbon dioxide in the atmosphere?
587
509
556
What are undesirable effects of deforestation?
593
501
511
