FOOD PROCESSING AND PRESERVATION
FERMENTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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glucose
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ATP
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NAD+
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pyruvic acid
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Detailed explanation-1: -During NADH regeneration, the two pyruvate molecules are first converted to two acetaldehyde molecules, releasing two carbon dioxide molecules in the process. The two NADH then donate electrons and hydrogen atoms to the two acetaldehyde molecules, producing two ethanol molecules and regenerating NAD+.
Detailed explanation-2: -Ethanol fermentation regenerates NAD+ from NADH by releasing CO2 from pyruvate and reducing the two-carbon acetaldehyde molecule to ethanol.
Detailed explanation-3: -As glucose is being broken down, in both cellular respiration and fermentation, there are high energy electrons that are being created. These high energy electrons are needed later on in the reaction. They need a carrier molecule to take them to their final destination. That carrier molecule is NAD+.