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Question 17N.3.HL.TZ0.20b

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Date November 2017 Marks available [Maximum mark: 2] Reference code 17N.3.HL.TZ0.20b
Level HL Paper 3 Time zone TZ0
Command term Outline Question number b Adapted from N/A
b.
[Maximum mark: 2]
17N.3.HL.TZ0.20b
(b)

The World Health Organization recommends that the iodine intake should be supplemented in pregnant women due to their increased requirements. Outline the need for iodine supplementation.

[2]

Markscheme

a. iodine is an essential nutrient/cannot be synthesized by the body

b. iodine is required for thyroid hormones/thyroxin production

c. some areas in the world have iodine deficient soil/low iodine in their diet

d. supplementation will reduce stunted growth and mental development/cretinism in babies born to mothers associated with thyroid deficiency

e. thyroid deficiency will lead to health problems

[Max 2 Marks]

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