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O-LevelBiologyCell Biology5090/12 · May/June 2022 · Q31 Mark

What is diffusion?

Amovement of particles by the air
Bmovement of molecules down a concentration gradient
Cmovement of molecules in a heated liquid
Dmovement of particles up a concentration gradient

✓ Correct answer

B: movement of molecules down a concentration gradient

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About this question

Topic
Cell Biology, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2022 Paper 1 Variant 2, question 3.

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