How many ATP are made from glucose in anaerobic respiration (fermentation)? Group of answer choices2343238

To address the question regarding the ATP yield from glucose during anaerobic respiration (fermentation), we can follow these steps:

1. Break Down the Problem

• Identify the processes involved in anaerobic respiration.
• Determine the amount of ATP produced during fermentation.

2. Relevant Concepts

• In anaerobic respiration, glucose is broken down to lactic acid (in animals) or ethanol and carbon dioxide (in yeast).
• The process primarily involves glycolysis, which produces a net gain of 2 ATP per molecule of glucose.

3. Analysis and Detail

• During anaerobic respiration (fermentation):
  • Glycolysis converts 1 molecule of glucose to 2 molecules of pyruvate, yielding 2 ATP.
  • The subsequent conversion of pyruvate to either lactic acid or ethanol does not produce additional ATP but allows for the regeneration of NAD+ necessary for glycolysis to continue.

4. Verify and Summarize

• In summary, despite the differences in end products (lactic acid or ethanol), both pathways yield the same amount of ATP.
• Thus, the total ATP produced from one molecule of glucose during fermentation is consistently 2 ATP.

Final Answer

The total ATP produced from glucose in anaerobic respiration (fermentation) is 2 ATP.