Biology GCSE
Diffusion
What Diffusion means in Biology GCSE, as defined for Pearson Edexcel.
Definition of Diffusion
The net movement of particles from an area of higher concentration to an area of lower concentration.
Topics that use Diffusion
- Topic 8 – Exchange and transport in animals (Pearson Edexcel GCSE)
Related terms
Using Diffusion in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
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