A-LevelBiologyGas exchange9700/12 · May/June 2022 · Q11 Mark
The photomicrograph shows a bronchiole and alveoli. The magnification of the image is ×360. What is the maximum diameter of the bronchiole lumen?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A14 μm
B80 μm
C140 μm
D170 µm
✓ Correct answer
C: 140 μm
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