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Question 3
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- The diagram below is an illustration of a condition in humans.
Study it carefully and use it to answer questions 3(a), (b), (c)
and (d).
- (i) Identify the deficiency condition illustrated in the
diagram. [1 mark]
(ii) Name the mineral deficiency that caused the
condition in the diagram above. [1 mark]
- Name three sources of food that can be taken to prevent
the occurrence of the condition. [3 marks]
(c) Name the hormone that is deficient in the condition. [1 mark]
- Name the endocrine gland that produces the hormone. [1 mark]
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This question was attempted by many candidates and their performance was fair. In part (a)(i) candidates correctly identify the deficiency condition illustrated in the diagram and in (a)(ii) candidates could not correctly name the mineral deficiency that caused the condition in the diagram above. In part (b), candidates correctly named sources of food that can be taken to prevent the occurrence of the illustrated condition. In part (c), candidates could not name the hormone that is deficient in the illustrated condition. In part (d) candidates also correctly named the endocrine gland that produces the hormone.
However, the expected answers are as follows:
3 (a) (i) CONDITION ILLUSTRATED IN THE DIAGRAM
- goitre
(ii) MINERAL DEFICIENCY THAT CAUSED THE CONDITION IN
THE DIAGRAM ABOVE
- iodine
(b) SOURCES OF FOOD THAT CAN BE TAKEN TO PREVENT
OCCURRENCE OF THE CONDITION
- vegetables
- sea food/named
- iodised common salt
- fresh fish/dried fish
(c) HORMONE THAT IS DEFICIENT
- thyroxine
(d) ENDOCRINE GLAND THAT PRODUCES THE HORMONE
- thyroid gland |
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