In the membrane of human red blood cell, the ratio of the mass of protein (average MW = 50000) to phospholipid (average MW = 800) to cholesterol (MW = 386) is about 2 : 1 ; 1. How many lipid molecules are there for every protein molecule? ~ helpBIOTECH

03 August 2016

In the membrane of human red blood cell, the ratio of the mass of protein (average MW = 50000) to phospholipid (average MW = 800) to cholesterol (MW = 386) is about 2 : 1 ; 1. How many lipid molecules are there for every protein molecule?

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~ 96 Lipid Molecules

Using these average molecular weights, there are 96 lipid molecules (phospholipid
+ cholesterol) for every protein molecule

{[(50,000/800) + (50,000/386)]/2 = 96}.

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