Biology A (Salters-Nuffield) A-Level
Diffusion
What Diffusion means in Biology A (Salters-Nuffield) A-Level, as defined for Pearson Edexcel.
Definition of Diffusion
Check what you remember
Read the wording for your board, then hide it and explain Diffusion in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
A passive and relatively slow process that only supplies an organism if every cell lies close to the exchange surface.
Topics that use Diffusion
- Topic 1: Lifestyle, Health and Risk (Pearson Edexcel A-Level)
Related terms
- Actual risk
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- Antihypertensives
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- Correlation
- Endothelial dysfunction
- Energy balance
- Ester bond
Using Diffusion in the exam
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