1. Question

Which of the following does NOT play a role in evolutionary change?

2. Question

The wall of the left ventricle is thicker than that of the right ventricle because:

3. Question

Which of the following statements about aerobic respiration is correct?

4. Question

Which one of the following is the best way to measure growth of an organism?

5. Question

All of the following are features of a gas exchange surface EXCEPT for:

6. Question

When a person who has diabetes injects himself with insulin it:

7. Question

The biceps and triceps are an antagonistic pair of muscles because:

8. Question

Which of the following is NOT transported in phloem?

9. Question

Proteins are:

10. Question

Decomposers are important in the process of decay because:

11. Question

A collection of several tissues which carry out a particular function is called:

12. Question

Cells become specialised to carry out different roles.This process is called:

13. Question

The chemicals that make up the bodies of animals and plants are called:

14. Question

In a plant cell, turgor is caused by:

15. Question

A lack of vitamin D in the diet causes:

16. Question

Single-celled organisms do not need a transport system because:

17. Question

A relationship between two organisms where one organism derives benefits from the relationship and the other organism derives no benefit, but is not harmed, is called:

18. Question

In a food chain a plant is a producer because it produces:

19. Question

An enzyme which has an optimum pH of 3 will function best in the:

20. Question

Which one of the following is NOT a receptor in the body?

21. Question

The part of the brain that processes information from the sense organs is the:

22. Question

Which one of the following is NOT an inherited disorder?

23. Question

Which of one the following statements about phloem cells is NOT true?

24. Question

The animals shown in the diagram were identified using a dichotomous key based on the visible characteristics listed below:
Ⅰ body shape
Ⅱ number of legs
Ⅲ number of wings
Ⅳ number of eyes
Ⅴ number of antennae
Which characteristics could be used to divide the animals into two groups?

25. Question

A typical soil contains mineral particles, humus, water, air and:

26. Question

Which one of the following foods contains the most energy per 100 g?

27. Question

Which of the following are examples of environmental variation in humans?
Ⅰ hair colour
Ⅱ height
Ⅲ intelligence
Ⅳ body mass

28. Question

The length of an insect such as a grasshopper increases in steps.This is because:

29. Question

Which of the following is NOT found dissolved in plasma?

30. Question

Which of the following statements about photosynthesis is NOT true?

31. Question

A cell in an embryo divides by mitosis three times in succession. How many cells will be formed from these divisions?

32. Question

Asexual reproduction produces:

33. Question

Water is lost from the body in:

34. Question

In the diagram of a section through a synovial joint, the part labelled X represents the:

35. Question

Enzymes are called biological catalysts because they:

36. Question

Which one of the following diagrams illustrates short-sightedness?

(F = Focal point)

37. Question

A species of mouse has 32 chromosomes in its muscle cells.What will be the numbers of chromosomes in the mouse′s skin cells and sperm cells?

38. Question

In an ecosystem a population is:

39. Question

Most plant and animal cells contain:

40. Question

All of the following processes result in energy loss from an ecosystem EXCEPT for:

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CSEC Subjects
English A
Information Technology
Integrated Science
Social Studies
CAPE Subjects
Chemistry Unit 1