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Which part of cholesterol molecule is not embedded in the lipid bilayer?(a) Hydroxyl end of cholesterol(b) Entire molecule of cholesterol(c) Hydrophobic rings(d) Hydroxyl end and ^1⁄4th of the hydrophobic rings |
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Answer» Correct answer is (a) Hydroxyl end of cholesterol The best explanation: Cholesterol molecules are oriented with their small hydrophilic hydroxyl groups toward the membrane surface and the remainder of molecule embedded in lipid bilayer. The hydrophilic rings of a cholesterol molecule are flat and rigid and interfere with the fatty acid tails of phospholipids. |
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