ChemSiddiqui Posted April 1, 2007 Share Posted April 1, 2007 hi, can any 1 help me out in this : 'An oxygen molecule diffuses directly from the air in an alvelolus to haemoglobin in a red blood cell. What is the minimum number of cell surface membrances through which this molecules must pass?' any help will be most appreciated Link to comment Share on other sites More sharing options...
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