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Multiple Choice
What is the final electron acceptor during fermentation in anaerobic respiration?
A
Nitrate
B
Pyruvate
C
Oxygen
D
Sulfate
Verified step by step guidance
1
Understand the context of fermentation: Fermentation is a metabolic process that occurs in the absence of oxygen (anaerobic conditions) and allows cells to generate energy.
Identify the role of electron acceptors: In cellular respiration, electron acceptors are molecules that receive electrons during the process of energy production.
Differentiate between aerobic and anaerobic respiration: In aerobic respiration, oxygen is the final electron acceptor. In anaerobic respiration, other molecules serve this role.
Recognize the specific process of fermentation: During fermentation, pyruvate, a product of glycolysis, acts as the final electron acceptor to regenerate NAD+ from NADH, allowing glycolysis to continue.
Conclude with the specific electron acceptor in fermentation: In the context of fermentation, pyruvate is the final electron acceptor, as it accepts electrons from NADH to form lactate or ethanol, depending on the type of fermentation.