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In the inner membrane of mitochondria, there is one protein molecule for approximately every _______

(a) 15 phospholipids

(b) 25 phospholipids

(c) 5 phospholipids

(d) 10 phospholipids

The question was asked in semester exam.

Enquiry is from Mitochondrial Structure and Function topic in portion Mitochondrial Structure and Function of Cell Biology

1 Answer

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Best answer
Correct choice is (a) 15 phospholipids

For explanation: The inner membrane contains more than 100 different polypeptides and has a very high protein to lipid ratio. The protein content exceeds 70% by weight. This corresponds to about one protein molecule for every 15 phospholipids.

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