During exercise, glycolysis is stimulated by a:

Question

Quizplus · Accepted Answer

During exercise, glycolysis is stimulated by a feed-forward stimulation of pyruvate kinase. This means that the activity of pyruvate kinase is increased in response to the initial steps of glycolysis, which provides positive feedback and drives the pathway forward. A high-energy charge of the cell would actually inhibit glycolysis, as it signals that there is enough energy available and glycolysis is not needed. Negative feedback inhibition on hexokinase would also slow down glycolysis rather than stimulate it. Therefore, the best choice is B.

During Exercise, Glycolysis Is Stimulated by A