객관식
Which of the following best describes the basic function of fermentation in cellular metabolism?
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8. Respiration
Fermentation & Anaerobic Respiration
객관식
Regardless of the electron or hydrogen acceptor used, one of the products of fermentation is always:
A
CO\(_2\)
B
NAD+
C
ATP
D
O\(_2\)
검증된 단계별 안내1
Understand the process of fermentation: Fermentation is an anaerobic process (does not require oxygen) that allows cells to regenerate NAD+ from NADH, enabling glycolysis to continue producing ATP.
Identify the key components of fermentation: During fermentation, pyruvate (produced in glycolysis) is converted into various end products depending on the organism and conditions. Common products include lactic acid, ethanol, and CO\(_2\), but the regeneration of NAD+ is a universal feature.
Recognize the role of NAD+: NAD+ is a crucial electron carrier that must be regenerated during fermentation to sustain glycolysis. Without NAD+, glycolysis would halt, and the cell would not produce ATP.
Eliminate incorrect options: CO\(_2\) is a product of some types of fermentation (e.g., alcoholic fermentation), but not all. ATP is produced during glycolysis, not directly during fermentation. O\(_2\) is not involved in fermentation as it is an anaerobic process.
Conclude that NAD+ is always a product of fermentation: Regardless of the specific type of fermentation, the regeneration of NAD+ is essential for the continuation of glycolysis and energy production in the absence of oxygen.
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