Biology 0610 · IGCSE · Gas exchange in humans

Gas exchange in humans — practice question

Fig. 1.1 presents part of the human gas exchange system.
(a(i))[3]

Identify the structures labelled A, B and C in Fig. 1.1.

(a(ii))[1]

State the function of the cartilage in Fig. 1.1.

(a(iii))[4]

Explain how inspiration takes place.

(b(i))[3]

State the names of these two types of cell and describe the way they defend the body against pathogens and particles.

(b(ii))[4]

Suggest how thicker and stickier mucus in the airways affects a person's ability to exercise.

(c)[5]

Complete the genetic diagram to predict how likely it is that these parents will have a child with cystic fibrosis.

Worked solution & mark scheme

This 20-mark question has a full step-by-step worked solution and mark scheme. One marking point: A is the trachea

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