In the membrane of a human red blood cell the ratio of the m

In the membrane of a human red blood cell, the ratio of the mass of protein (Average molecular weight 50,000) to phospholipid (molecular weight 800) to cholesterol (molecular weight 386) is about 2:1:1. How many lipid molecules are there for every protein molecule?

Solution

Answer:

From the given information in the question: ratio is 2:1:1

Mass of protein = 2/50000 = 0.00004

Phospholipid = 1/800 =0.00125

Cholesterol = 1/386 =0.00259

=((2/50,000)   + (1/800+1/386))

= 100