AQA · GCSE · Biology · Higher
Meaning of the term diffusion
What is meant by the term diffusion?
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Marking points
- 1 Movement or spreading out of molecules/particles or named substances/chemicals/gases/liquids.
- 2 From an area of higher concentration to an area of lower concentration; allow down/with the concentration gradient.
Full-mark answer
Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.