In skeletal muscle, ATP can be synthesized by transferring a phosphate group from creatine -P to ADP to form ATP and creatine. In this example, ATP was synthesized by what process?
A) oxidation
B) substrate -level phosphorylation
C) reduction
D) oxidative phosphorylation
E) condensation

Question

Quizplus · Accepted Answer

This process is known as substrate-level phosphorylation, where a phosphate group is directly transferred from a phosphorylated substrate (in this case, creatine phosphate) to ADP, forming ATP. This mechanism is distinct from oxidative phosphorylation, which involves the electron transport chain and a proton gradient.

In Skeletal Muscle, ATP Can Be Synthesized by Transferring a Phosphate