Which of the following is true of all glycerophospholipids?
A) They are composed of only saturated fatty acids.
B) They are composed of only unsaturated fatty acids.
C) Their backbone is composed of the trihydric alcohol glycerol.
D) Their third group is esterified by a nitrate group, which is also esterified to an alcohol.

Question

Quizplus · Accepted Answer

All glycerophospholipids have a backbone composed of the trihydric alcohol glycerol. The fatty acid chains esterify the first and second hydroxyl groups of the glycerol, while the third hydroxyl group is esterified to a phosphate group, which is usually further esterified to an amino alcohol such as choline or ethanolamine. The answer choices A, B, and D are all incorrect because they make inaccurate statements about the composition of glycerophospholipids.

Which of the Following Is True of All Glycerophospholipids