VPY-0094
QUESTION
Phosphorylase A converts?
OPTIONS
(A) Glucose to fructose
(B) Fructose to glucose
(C) Glycogen to glucose
(D) None of the above
ANSWER
(C) Glycogen to glucose
EXPLANATION
Glycogen to glucose is the correct option because glycogen phosphorylase removes glucose residues from glycogen as glucose-1-phosphate during glycogenolysis, with subsequent conversion toward glucose. The enzyme does not convert glucose to fructose or fructose to glucose; those reactions belong to other metabolic pathways and enzymes.
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