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What vitamin acts as a coenzyme in cell respiration and is important in alcohol fermentation? O A. thiamine O B. riboflavin O
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Answer #1

Correct Option: A Thiamine

Thiamine (as a thiamine pyrophosphate (TPP) act as coenzyme in metabolism of carbohydrates, lipids and amino acids.

It is an important coenzyme for the enzymes of carbohydrate metabolism.

In alcohol fermentation, it is used in first step of the reaction (shown below)

Alcoholic Fermentation CO2 NADH + H+ NAD+ OH TPP, Mg2+ YTT O. H. -0 CH2 - Pyruvate Decarboxylase Alcohol Dehydrogenase CH, Py

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