A-LevelBiologyCell structure9700/12 · May/June 2016 · Q11 Mark

A student was presented with a photomicrograph of a cell organelle. The magnification of the photomicrograph is known. Which calculation of the actual length of the organelle in µm is correct?

Aactual size in cm × 100 divided by the magnification

Bactual size in mm × 100 divided by the magnification

Cimage size in cm × 1000 divided by the magnification

Dimage size in mm × 1000 divided by the magnification

✓ Correct answer

D: image size in mm × 1000 divided by the magnification

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Topic: Cell structure, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, May/June 2016 Paper 1 Variant 2, question 1.

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