Protein Catabolism Is an Impractical Source of Quick Energy Because

Multiple Choice

Protein catabolism is an impractical source of quick energy because

A) the major byproduct is hydrogen, which cells cannot use for energy.
B) proteins are unimportant to cellular homeostasis.
C) the body cannot synthesize any of the amino acids, which it needs.
D) proteins are catabolized much too easily, resulting in homeostatic imbalance.
E) proteins are more difficult to catabolize than are complex carbohydrates or lipids.