Biology · IGCSE · Edexcel · Pearson Edexcel International GCSE (9–1) Biology (Modular) — 4XBI1 · Specification point · 2.16 · Structure and functions in living organisms: Part 1 · Movement of substances into and out of cells
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| Learners should: |
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2.16 understand how factors affect the rate of movement of substances into and out of cells, including the effects of surface area to volume ratio, distance, temperature and concentration gradient |