Question Detail
Question
During anaerobic respiration, the product preceding ethanol is?
Correct Answer
Option C is the correct answer.
Detailed Explanation
In alcoholic fermentation, pyruvate from glycolysis is first decarboxylated to acetaldehyde (releasing CO2). Acetaldehyde is then reduced to ethanol by NADH, regenerating NAD+ for glycolysis to continue.
Hint
What is the two-carbon intermediate between pyruvate and ethanol in yeast fermentation?