Which of the following is true of all lecithins?
A) They are composed of only saturated fatty acids.
B) They are composed of only unsaturated fatty acids.
C) They always have a choline group in carbon 3 of the glycerol backbone.
D) They always have an unsaturated fatty acid bound to carbon 1 of the glycerol backbone.

Question

Quizplus · Accepted Answer

Lecithins always have a choline group in carbon 3 of the glycerol backbone, but they can have both saturated and unsaturated fatty acids bound to carbons 1 and 2. Therefore, option A and B are not true of all lecithins. Option D only applies to unsaturated lecithins.

Which of the Following Is True of All Lecithins