The first bioenergetic pathway to become active at the onset of exercise is
A) glycolysis.
B) the ATP-CP system.
C) the Krebs cycle.
D) the electron transport chain.

Question

Quizplus · Accepted Answer

The ATP-CP system is the first bioenergetic pathway to become active at the onset of exercise because it can provide energy quickly without the need for oxygen. Glycolysis, the Krebs cycle, and the electron transport chain require oxygen and take longer to produce ATP.

The First Bioenergetic Pathway to Become Active at the Onset