A-LevelBiologyCell structure9700/12 · Feb/Mar 2023 · Q11 Mark

The photomicrograph shows cells from a human blood smear. [Figure 1.1] Which calculation shows a correct method to calculate the actual diameter of the neutrophil shown in the photomicrograph in micrometres (μm)?

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Alength of line PQ in mm × 1000 magnification of photomicrograph

Blength of line PQ in mm × 10000 magnification of photomicrograph

Cmagnification of photomicrograph length of line PQ in mm × 1000

Dmagnification of photomicrograph length of line PQ in mm × 10000

✓ Correct answer

A: length of line PQ in mm × 1000 magnification of photomicrograph

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Topic: Cell structure, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source: A-Level Biology, Feb/Mar 2023 Paper 1 Variant 2, question 1.

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