Multiple Choice
What compound is converted to phosphoenolpyruvate in glycolysis?
22. Carbohydrate Metabolism
Glycolysis Summary
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Which reaction of the glycolysis pathway is catalyzed by the enzyme pyruvate kinase?
A
Reaction 9
B
Reaction 10
C
Reaction 6
D
Reaction 7
Verified step by step guidance1
Understand the role of pyruvate kinase in glycolysis: Pyruvate kinase is an enzyme that catalyzes the final step of glycolysis, converting phosphoenolpyruvate (PEP) to pyruvate.
Identify the sequence of reactions in glycolysis: Glycolysis consists of 10 steps, each catalyzed by a specific enzyme.
Locate the reaction catalyzed by pyruvate kinase: Pyruvate kinase acts in the 10th reaction of glycolysis, where PEP is converted to pyruvate, producing ATP in the process.
Review the list of reactions provided: Compare the reaction numbers given in the problem with the known sequence of glycolysis reactions.
Confirm the correct reaction number: Based on the understanding that pyruvate kinase catalyzes the 10th reaction, verify that Reaction 10 is the correct answer.
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