A-LevelBiologyCell structure9700/12 · May/June 2013 · Q11 Mark

A light microscope is used to observe two membranes that are 200 nm apart. How far apart are the membranes when the objective lens is changed from low power to high power (x400)?

A2 μm

B20 μm

C200 nm

D2000 nm

✓ Correct answer

C: 200 nm

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Topic: Cell structure, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2013 Paper 1 Variant 2, question 1.

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