The enzyme phosphofructokinase is the major regulatory enzyme of glycolysis. It catalyzes
A) the isomerization of glucose 6- phosphate to fructose 6- phosphate.
B) the phosphorylation of fructose 6- phosphate.
C) the substrate- level phosphorylation reaction whereby phosphoenolpyruvate is converted to pyruvate.
D) the first of the 10 reactions of glycolysis.

Question

Quizplus · Accepted Answer

Phosphofructokinase catalyzes the phosphorylation of fructose 6-phosphate, which is the third step of glycolysis and a major regulatory step.

The Enzyme Phosphofructokinase Is the Major Regulatory Enzyme of Glycolysis