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CAIE IGCSE Biology 7 Human Nutrition Questions

Practise balanced-diet, digestion and absorption questions using food data, alimentary-canal diagrams and enzyme evidence.

Syllabus
2026–2028
Course
Biology 0610

Covered syllabus points

7.1 Diet7.2 Digestive system7.3 Physical digestion7.4 Chemical digestion7.5 Absorption

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: 1]

Which is a part of the small intestine?

A

colon

B

ileum

C

oesophagus

D

rectum

Question 3

[Maximum number: 14]

Question (a)

(a)

Describe what is meant by the term physical digestion.

[ 2 ]

Question (b)

(b)

Fig. 1.1 is a diagram of the human digestive system.

Fig. 1.1

Fig. 1.1

State the letter from Fig. 1.1 that shows one part where:
- physical digestion occurs;
- glucagon is produced;
- bile is produced.

[ 3 ]

Question (c)

(c)

Explain the role of bile in physical digestion.

[ 3 ]

Question (d)

(d)

Physical digestion also occurs in the mouth.

State the names and functions of two types of human teeth.

[ 2 ]

Question (e)

(e)

Fig. 1.2 is a photomicrograph of part of one villus in the small intestine.

Fig. 1.2

Fig. 1.2

Identify and explain the roles of the parts labelled X and Y in Fig. 1.2.

[ 4 ]

Question 4

[Maximum number: 1]

What is an example of chemical digestion?

A

breaking down starch into reducing sugars

B

churning of food by muscular contractions of the stomach wall

C

grinding of food by teeth

D

mixing of food with bile

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