O-LevelBiologyCell Biology5090/11 · Oct/Nov 2013 · Q11 Mark

A plant is grown in bright sunlight. The diagram shows what is seen when a cell from a leaf is placed under a microscope. After a few hours, a leaf from this plant is stained with iodine solution. What will be stained blue/black?

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.

AThe nucleus

BThe cell wall

CThe cytoplasm

Dstarch grain

✓ Correct answer

C: The cytoplasm

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Topic: Cell Biology, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2013 Paper 1 Variant 1, question 1.

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