O-LevelBiologyCell Biology5090/11 · Oct/Nov 2015 · Q21 Mark
What describes the diffusion of molecules?
Amovement from a region of their higher concentration to a region of their lower concentration down a concentration gradient
Bmovement from a region of their higher concentration to a region of their lower concentration up a concentration gradient
Cmovement from a region of their lower concentration to a region of their higher concentration down a concentration gradient
Dmovement from a region of their lower concentration to a region of their higher concentration up a concentration gradient
✓ Correct answer
A: movement from a region of their higher concentration to a region of their lower concentration down a concentration gradient
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