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During fermentation, __________ that was produced during glycolysis is converted back to __________.

User AlexGIS
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Answer:

During fermentation, NADH that was produced during glycolysis is converted back to NAD+.

Step-by-step explanation:

Glycolysis includes a breakdown of a glucose molecule into two molecules of pyruvate. During these reactions, NAD+ serves as an electron donor and is reduced into NADH. For one molecule of glucose, two molecules of NAD+ are reduced into NADH. To continue the process of glycolysis, the NAD+ supply should be continued.

Electron transport chain oxidized NADH into NAD+ in presence of oxygen. In the absence of oxygen, either reduction of pyruvate or any other substance uses NADH as an electron donor and the NAD+ is regenerated. This is called fermentation. During lactic acid fermentation, the reduction of pyruvate into lactate regenerates the NAD+.

User Franfran
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