Hormones catalyze metabolic reactions with the aid of coenzymes, especially forms of niacin and riboflavin, as well as enzymes such as insulin, glucagon, epinephrine, and cortisol.

Question

Quizplus · Accepted Answer

Hormones do not catalyze metabolic reactions themselves; they act as signaling molecules that regulate the activity of enzymes, which then catalyze metabolic reactions.

Hormones Catalyze Metabolic Reactions with the Aid of Coenzymes, Especially