Which is LEAST likely to be characteristic of a regulated enzyme in a metabolic pathway?
A) catalyzes the slowest step of the pathway
B) has a short half-life in vivo
C) concentration is hormonally regulated
D) activity under allosteric control
E) catalyzes a physiologically reversible reaction

Question

Quizplus · Accepted Answer

Enzymes that catalyze physiologically reversible reactions are less likely to be points of regulation in metabolic pathways. Regulation typically occurs at steps that are irreversible under physiological conditions, as these steps are more effective control points for the pathway's overall direction and rate.

Which Is LEAST Likely to Be Characteristic of a Regulated