Which metabolic process is common to both cellular respiration and alcoholic fermentation?

Krebs cycle

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Glycolysis

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Electron transport chain

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Conversion of pyruvic acid to acetyl CoA

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Solution

The correct option is B Glycolysis
Fermentation requires the products of glycolysis, i.e., pyruvate and NADH, to occur. Glycolysis is the first step in both aerobic and anaerobic respiration. It occurs in the absence of oxygen. It is a process that begins with a high-energy molecule like a sugar, protein or lipid and breaks it down into pyruvate. Krebs cycle, electron transport chain and conversion of pyruvic acid to acetyl CoA are not common in both cellular respiration and alcoholic fermentation.
Therefore, the correct answer is option B.

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