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AS
3.3 Exchange of substances
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3.3.4 Mass transport
Biology > AS > 3.3 Exchange of substances
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3.3.3 Digestion and absorption
Biology > AS > 3.3 Exchange of substances
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3.3.2 Gas exchange
Biology > AS > 3.3 Exchange of substances
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3.3.1 SA:V ratio
Biology > AS > 3.3 Exchange of substances
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Cards (153)
Features of exchange surfaces:
Large
SA:V ratio
One
cell thick
Moist
Efficient
transport
system
Diffusion
gradient
Permeable
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