Topic: Glycolysis and fermentation· Plant Physiology

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by :

1. Aldolase

2. Hexokinase

3. Enolase

4. Phosphofructokinase

Doubtly Asked 30 Oct 2026 NEET UG 2019 Practice test neet Save WhatsApp Report

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Answer: 2. Hexokinase

Key idea: Hexokinase phosphorylates glucose using ATP to give glucose-6-phosphate, the first irreversible step.

Phosphofructokinase converts fructose-6-phosphate to fructose-1,6-bisphosphate; aldolase splits that into trioses; enolase converts 2-phosphoglycerate to PEP.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by :

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