13. The plasma membrane of E. coli consists of approximately 75% lipids and 25% proteins by weight. For each protein molecule with an average molecular weight (Mr) of 50,000, how many membrane lipid molecules (average Mr 750) are present?
(A) 2
(B) 20
(C) 200
(D) 2,000
(E) 20,000
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統計: A(0), B(0), C(6), D(3), E(0) #3252595
統計: A(0), B(0), C(6), D(3), E(0) #3252595