NEET Biology question

Select the incorrect statement with respect to the given representation of alcoholic fermentation (Glucose → 2ATP + 2NADH → 2 Pyruvate --X--> 2 Acetaldehyde --Y--> 2 Ethanol).

(A)X is the enzyme pyruvate dehydrogenase and Y is the enzyme ethanol decarboxylase.Correct
(B)This process is involved in the brewing industry for producing beverages like beer, rum, whisky, etc.
(C)Accumulation of the end product (i.e., ethanol) during this process, in a culture of yeast, stops the multiplication of yeast cells and may even lead to death of cells.
(D)None of these

Answer: (A)

Solution

The enzyme converting pyruvate to acetaldehyde (X) is pyruvate decarboxylase, not "pyruvate dehydrogenase" (a different enzyme that instead converts pyruvate to acetyl-CoA); the enzyme converting acetaldehyde to

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Question ID VK-113458