Biology 5090 · O Level · Human gas exchange

Human gas exchange — practice question

The diagram depicts the human lungs and the structures connected with them.
(a)[3]

Finish the diagram by writing the names of the labelled parts.

(b)[3]

Explain why a human requires lungs.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “windpipe / trachea” …

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