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Exchange surfaces — OCR GCSE Biology A J247
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Biology
OCR GCSE Biology A
Scaling up
The challenges of size
Exchange surfaces
OCR GCSE Biology A · J247
Exchange surfaces
What you need to know
Explain the necessity of exchange surfaces and transport systems in multicellular organisms based on surface area to volume ratio.
Calculate surface area, volume, and surface area:volume ratios.
Relate diffusion distances to the need for transport systems.
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Exchange surfaces
7 key terms
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Substances transported
