Multiple Choice
Which of the following occurs only in anaerobic metabolism of glucose?
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8. Respiration
Fermentation & Anaerobic Respiration
Multiple Choice
What is the fate of the NAD\(^+\) newly regenerated by fermentation?
A
It is broken down into amino acids for protein synthesis.
B
It is exported out of the cell as a waste product.
C
It is converted into ATP during oxidative phosphorylation.
D
It is reused in glycolysis to accept electrons.
Verified step by step guidance1
Understand the role of NAD\(^+\) in cellular respiration: NAD\(^+\) is a coenzyme that acts as an electron carrier during metabolic processes, including glycolysis.
Recall the purpose of fermentation: Fermentation occurs in anaerobic conditions to regenerate NAD\(^+\), allowing glycolysis to continue producing ATP in the absence of oxygen.
Identify the connection between NAD\(^+\) and glycolysis: NAD\(^+\) is reused in glycolysis to accept electrons from glucose as it is broken down into pyruvate.
Eliminate incorrect options: NAD\(^+\) is not broken down into amino acids, exported as waste, or converted into ATP during oxidative phosphorylation (which requires oxygen).
Conclude that the regenerated NAD\(^+\) is essential for glycolysis to proceed, ensuring the cell can continue producing ATP anaerobically.
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