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CAIE IGCSE Biology 7.1 Diet Questions

Practise evaluating balanced diets and linking nutrient sources and functions to deficiency symptoms and personal needs.

Syllabus
2026–2028
Course
Biology 0610

Exam points

  • Define a balanced diet and judge whether energy intake is suitable for activity level, age, sex, pregnancy or lifestyle.
  • Match carbohydrate, fat, protein, fibre, water, vitamin and mineral sources to their functions, and use food or RDA data to justify dietary choices.
  • Link nutrient deficiencies to symptoms and diseases including scurvy, rickets, anaemia, constipation and protein-energy malnutrition.
  • Apply dietary evidence to health recommendations, including preventing deficiency, limiting excess fat or sugar and comparing food or supplement choices.

Covered syllabus points

7.1.1—What is meant by a balanced diet7.1.2—Principal dietary sources and describe7.1.3—Causes of scurvy and rickets

Question 1

[Maximum number: 4]

Question (a)

(a)

As part of a balanced diet, some governments recommend that children drink milk that has vitamin D added to it.

[ 4 ]

Question (i)

(i)

Suggest the dietary reasons for this advice.

[ 2 ]

Question (ii)

(ii)

Describe what is meant by a balanced diet.

[ 2 ]

Question 2

[Maximum number: 4]

Carbohydrates are an important component of a balanced diet.
The flow chart in Fig. 3.1 shows some of the processes that happen to carbohydrates in food that is eaten.

Fig. 3.1

Fig. 3.1

Mineral salts are another important component of a balanced diet.

State the importance of calcium ions and iron ions in a balanced diet.
calcium ions
iron ions

Question 3

[Maximum number: 1]

Fish are an important part of a balanced diet for many people.

Fish are a good source of vitamin D.

State one effect of a diet that is deficient in vitamin D.

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