Question

The enzyme phospho-glycerate mutase is involved in which of the following reactions of glycolysis?

• A. ATP-generation - I
• B. ATP-generation - II
• C. Dehydration
• D. Isomerization

Hint:

Phospho-glycerate mutase catalyzes the isomerization of 3-phosphoglycerate to 2-phosphoglycerate in glycolysis.

Answer 1

The Correct Option is D

Step 1: Understanding phospho-glycerate mutase.
Phospho-glycerate mutase is an enzyme involved in the glycolysis pathway. It catalyzes the isomerization of 3-phosphoglycerate to 2-phosphoglycerate. This is a crucial step in glycolysis.
Step 2: Analyzing the options.
(A) ATP-generation - I: This is incorrect as phospho-glycerate mutase does not directly generate ATP.
(B) ATP-generation - II: Similarly, phospho-glycerate mutase does not directly participate in ATP generation in this phase of glycolysis.
(C) Dehydration: Phospho-glycerate mutase does not catalyze a dehydration reaction in glycolysis.
(D) Isomerization: Correct — Phospho-glycerate mutase catalyzes the isomerization of 3-phosphoglycerate to 2-phosphoglycerate.
Step 3: Conclusion.
The correct answer is (D) Isomerization, as this enzyme catalyzes the isomerization reaction in glycolysis.