Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?

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asked May 27, 2017 in Biology by Kundan kumar (49,132 points) 34 435 1352

1 Answer

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answered May 27, 2017 by Vikash Kumar (144,729 points) 8 11 26
selected Jun 1, 2017 by Kundan kumar
 
Best answer
In multi-cellular organisms, all the cells may not be in direct contact with the surrounding environment. Thus, simple diffusion will not meet the requirements of all the cells.

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