Which of these statements about carbohydrates is correct ?
A) Carbohydrates contain both a carboxyl and an amine group.
B) Carbohydrates contain a phosphate backbone with sugar groups.
C) Carbohydrates release more energy per gram than any other biomolecule.
D) Carbohydrates are polyhydroxy aldehydes or ketones, or their derivatives.
E) Carbohydrates are formed when a carboxylic acid reacts with glycerol in an acidic environment.

Question

Quizplus · Accepted Answer

Carbohydrates are polyhydroxy aldehydes or ketones, or their derivatives. They do not contain carboxyl or amine groups and do not have a phosphate backbone. While carbohydrates do release energy when metabolized, they do not release more energy per gram than lipids or fats. They are not formed by the reaction of a carboxylic acid and glycerol.

Which of These Statements About Carbohydrates Is Correct