Glycolysis that starts with glycogen instead of glucose can be considered to have a higher energy yield because:
A) Phosphorolysis reactions cleave bonds with phosphate instead of water.
B) Phosphorylase is a better enzyme than hexokinase
C) Phosphorylase produces a glucose phosphate without spending an ATP to do it
D) All of these
E) None of these is true because glycolysis starting from glycogen does not have a higher energy yield

Question

Quizplus · Accepted Answer

Phosphorylase cleaves glycogen to produce glucose-1-phosphate, which is converted to glucose-6-phosphate without using ATP, unlike glucose which requires ATP to be phosphorylated by hexokinase.

Glycolysis That Starts with Glycogen Instead of Glucose Can Be