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In anaerobic environments, which process do many microorganisms use to generate ATP in the absence of oxygen?
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12. Microbial Metabolism
Fermentation & Anaerobic Respiration
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Which of the following statements regarding fermentation is correct?
A
Fermentation involves the electron transport chain to generate ATP.
B
Fermentation generates ATP exclusively through substrate-level phosphorylation.
C
Fermentation produces more ATP per glucose molecule than aerobic respiration.
D
Fermentation requires oxygen as the final electron acceptor.
Guida verificata passo dopo passo1
Step 1: Understand the definition of fermentation. Fermentation is a metabolic process that converts sugar to acids, gases, or alcohol in the absence of oxygen.
Step 2: Recall how ATP is generated during fermentation. Unlike aerobic respiration, fermentation does not use the electron transport chain; instead, ATP is produced solely through substrate-level phosphorylation.
Step 3: Analyze the role of the electron transport chain. Since fermentation occurs without oxygen, it does not involve the electron transport chain, which is a key component of aerobic respiration.
Step 4: Compare ATP yield between fermentation and aerobic respiration. Fermentation produces less ATP per glucose molecule compared to aerobic respiration because it relies only on substrate-level phosphorylation.
Step 5: Consider the requirement of oxygen in fermentation. Fermentation is an anaerobic process and does not require oxygen as the final electron acceptor; instead, organic molecules serve this role.
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