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A-LevelBiologyGas exchange9700/12 · May/June 2023 · Q351 Mark

Where are squamous epithelial cells found in the human gas exchange system?

Atrachea (present), bronchus (present), alveolus (present)
Btrachea (not present), bronchus (present), alveolus (present)
Ctrachea (not present), bronchus (present), alveolus (not present)
Dtrachea (not present), bronchus (not present), alveolus (present)

✓ Correct answer

D: trachea (not present), bronchus (not present), alveolus (present)

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About this question

Topic
Gas exchange, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, May/June 2023 Paper 1 Variant 2, question 35.

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