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JAMB Biology questions

438 questions with answers and explanations. Tap an option to check yourself.

AllJAMBWAEC
All topicsCell structure and organisation · 30Cellular activities · 32Co-ordination and control · 31Ecology · 38Evolution · 27Excretion · 30Growth · 27Heredity and variation · 36Nutrition · 34Reproduction · 33Respiration · 30Support and movement · 28Transport · 30Variety of organisms · 32

  1. Question 61· Cellular activities· JAMB

    A strip of potato placed in a strong sugar solution for an hour becomes

    Explanation and discussion

  2. Question 62· Cellular activities· JAMB

    The enzyme amylase converts

    Explanation and discussion

  3. Question 63· Co-ordination and control· JAMB

    The ear ossicles transmit vibrations from the

    Explanation and discussion

  4. Question 64· Co-ordination and control· JAMB

    A lack of iodine in the diet can cause

    Explanation and discussion

  5. Question 65· Co-ordination and control· JAMB

    Thyroxine controls

    Explanation and discussion

  6. Question 66· Co-ordination and control· JAMB

    Rods in the retina are sensitive to

    Explanation and discussion

  7. Question 67· Co-ordination and control· JAMB

    The ability of the eye to focus on objects at different distances is called

    Explanation and discussion

  8. Question 68· Co-ordination and control· JAMB

    A lack of thyroxine in young children causes

    Explanation and discussion

  9. Question 69· Co-ordination and control· JAMB

    Long sight (hypermetropia) is usually caused by

    Explanation and discussion

  10. Question 70· Co-ordination and control· JAMB

    Thinking, memory and voluntary actions are controlled by the

    Explanation and discussion

  11. Question 71· Co-ordination and control· JAMB

    Neurones that carry impulses from the central nervous system to muscles and glands are

    Explanation and discussion

  12. Question 72· Co-ordination and control· JAMB

    Roots growing downwards in response to gravity show

    Explanation and discussion

  13. Question 73· Co-ordination and control· JAMB

    Breathing and heartbeat are controlled by the

    Explanation and discussion

  14. Question 74· Co-ordination and control· JAMB

    The part of the eye that controls the amount of light entering it is the:

    Explanation and discussion

  15. Question 75· Co-ordination and control· JAMB

    Insulin is secreted by the

    Explanation and discussion

  16. Question 76· Co-ordination and control· JAMB

    The correct pathway of a reflex action is

    Explanation and discussion

  17. Question 77· Co-ordination and control· JAMB

    The hormone that lowers blood glucose is:

    Explanation and discussion

  18. Question 78· Co-ordination and control· JAMB

    In a spinal reflex arc, the relay neurone is located in the

    Explanation and discussion

  19. Question 79· Co-ordination and control· JAMB

    Impulses are transmitted across a synapse by

    Explanation and discussion

  20. Question 80· Co-ordination and control· JAMB

    The 'master gland' of the endocrine system is the

    Explanation and discussion

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