NURSING EXAM QUESTIONS
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Lipids account for 3% of the cell weight
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Cholesterol molecules, although less abundant than glycerophospholipids, account for about 20 percent of the lipids in animal cell plasma membranes.
Detailed explanation-2: -Lipids are composed of carbon, hydrogen and oxygen atoms, and in some cases contain phosphorus, nitrogen, sulfur and other elements.
Detailed explanation-3: -The “average” lipid molecular weight of a membrane consisting of equal amounts of cholesterol and the heavier form of phosphatidyl choline is just about 600.
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