Date | May 2015 | Marks available | 2 | Reference code | 15M.3.SL.TZ1.2 |
Level | Standard level | Paper | Paper 3 | Time zone | Time zone 1 |
Command term | Outline | Question number | 2 | Adapted from | N/A |
Question
Water and minerals are essential in the human diet. List two other types of nutrient in a human diet.
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Outline the benefits of using iodine as a dietary supplement.
Markscheme
(essential) amino acids;
(essential) fatty acids / oils / lipids / fats;
vitamins;
carbohydrates;
a. iodine is a mineral that is often scarce in local diets/water supplies;
b.required for normal thyroid function/synthesise thyroxine;
c.prevents goitre/avoid iodine deficiency/avoid absorbing iodine–131/radioactiveiodine;
d.prevents brain damage;[