The molecule that rapidly replenishes ATP at the beginning of muscle activity is:

Question

Quizplus · Accepted Answer

Creatine phosphate is the molecule that rapidly replenishes ATP at the beginning of muscle activity. It is stored in muscle cells and is used to donate a phosphate group to ADP to quickly form ATP, providing energy for muscle contraction. This process is significant in short bursts of intense physical activity, such as weightlifting or sprinting.

The Molecule That Rapidly Replenishes ATP at the Beginning of Muscle