In Anaerobic Skeletal Muscle, Breakdown of Glycogen Yields _____ ATP

Question

In anaerobic skeletal muscle, breakdown of glycogen yields _____ ATP per glucose equivalent.
A) 1
B) 2
C) 3
D) 4
E) 32

Accepted Answer

In anaerobic conditions, glycogen breakdown in skeletal muscle yields 3 ATP per glucose equivalent because glycogen is already phosphorylated, saving one ATP that would otherwise be used in glycolysis.