FOOD PROCESSING AND PRESERVATION
FERMENTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Why does fermentation occur if oxygen is not present?
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It makes more ADP available to the cell
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It recycles NADH to NAD+
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It converts pyruvate back to glucose
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It finishes releasing lots of energy from pyruvate
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Explanation:
Detailed explanation-1: -When oxygen is not present or if an organism is not able to undergo aerobic respiration, pyruvate will undergo a process called fermentation. Fermentation does not require oxygen and is therefore anaerobic. Fermentation will replenish NAD+ from the NADH + H+ produced in glycolysis.
Detailed explanation-2: -Fermentation can remove the electron from NADH molecules and regenerate NAD+ molecules which is need for glycolysis that picks up the electron where no need oxygen to pick up the electrons for continuing the body function.
Detailed explanation-3: -The NADH (biological substance producing energy) gets recycled by the fermentation process into NAD+ to allow glycolysis to generate ATP without oxygen.
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