In glycolysis, which enzyme catalyzes the conversion of phosphoenolpyruvate to pyruvate?

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Multiple Choice

In glycolysis, which enzyme catalyzes the conversion of phosphoenolpyruvate to pyruvate?

Explanation:
The key idea is identifying which enzyme drives the final step of glycolysis that converts phosphoenolpyruvate into pyruvate while also generating ATP. That enzyme is pyruvate kinase. It transfers the phosphate from phosphoenolpyruvate to ADP, producing one ATP and yielding pyruvate as the end product. The other enzymes do different tasks: enolase makes phosphoenolpyruvate from 2-phosphoglycerate, phosphoglycerate kinase produces ATP earlier in the pathway, and pyruvate carboxylase converts pyruvate to oxaloacetate in gluconeogenesis, not glycolysis.

The key idea is identifying which enzyme drives the final step of glycolysis that converts phosphoenolpyruvate into pyruvate while also generating ATP. That enzyme is pyruvate kinase. It transfers the phosphate from phosphoenolpyruvate to ADP, producing one ATP and yielding pyruvate as the end product. The other enzymes do different tasks: enolase makes phosphoenolpyruvate from 2-phosphoglycerate, phosphoglycerate kinase produces ATP earlier in the pathway, and pyruvate carboxylase converts pyruvate to oxaloacetate in gluconeogenesis, not glycolysis.

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