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A-LevelBiologyGas exchangeMay/June 2022Paper 2 Q56 Marks

Fig. 5.1 is a photomicrograph of a transverse section through part of the bronchus of the human gas exchange system. The image is of a good resolution for a light microscope. The bronchial epithelium is a single layer of cells lining the lumen of the bronchus. [Figure 5.1]

Q: What topic does this question test?

This question tests Gas exchange in A-Level Biology (syllabus code 9700). It is worth 6 marks.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Biology Question

Topic

This structured question tests Gas exchange in A-Level Biology (syllabus code 9700). It is worth 6 marks.

Source

This question appeared in the Cambridge A-Level Biology May/June 2022 examination, Paper 2 Variant 2.

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