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  1. GCSE
  3. Biology OCR
  5. 2.2.1 Exchange surfaces and surface area : volume ratio

2.2.1 Exchange surfaces and surface area : volume ratio

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Revise OCR GCSE Biology 2.2.1 Exchange surfaces and surface area : volume ratio with the question bank, lessons, revision guides, and flashcards.

explain the need for exchange surfaces and a transport system in multicellular organisms in terms of surface area : volume ratio • calculation of surface area, volume and surface area : volume ratio, and reference to diffusion distances

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