In the alcoholic fermentation of glucose by yeast, thiamine pyrophosphate is a coenzyme required by:

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Pyruvate decarboxylase is the enzyme responsible for decarboxylating pyruvate to acetaldehyde in the alcoholic fermentation pathway. Thiamine pyrophosphate is a coenzyme required by pyruvate decarboxylase for its enzymatic activity. Choice A, aldolase, is involved in the aldol condensation reaction in glycolysis and does not require thiamine pyrophosphate as a coenzyme. Choice B, hexokinase, is the enzyme responsible for phosphorylating glucose in glycolysis and does not require thiamine pyrophosphate as a coenzyme. Choice C, lactate dehydrogenase, is the enzyme responsible for converting pyruvate to lactate in anaerobic respiration and does not require thiamine pyrophosphate as a coenzyme. Choice E, transaldolase, is involved in the pentose phosphate pathway and does not require thiamine pyrophosphate as a coenzyme in alcoholic fermentation.

In the Alcoholic Fermentation of Glucose by Yeast, Thiamine Pyrophosphate