Epinephrine Triggers an Increased Rate of Glycolysis in Muscle By

Question

Epinephrine triggers an increased rate of glycolysis in muscle by:
A) activation of hexokinase.
B) activation of phosphofructokinase-1.
C) conversion of glycogen phosphorylase a to glycogen phosphorylase b.
D) inhibition of the Cori cycle
E) the Pasteur effect.

Accepted Answer

Epinephrine activates phosphofructokinase-1 (PFK-1), which is a key regulatory enzyme in the glycolysis pathway. By activating PFK-1, epinephrine triggers an increased rate of glycolysis in muscle cells.