Lactic acid fermentation in muscle differs from alcoholic fermentation in that lactic acid fermentation
ARequires Complex IV to work in matrix
BProduces lactate without releasing CO2
CProduces ethanol after CO2 release
DOperates only in aerobic conditions
Answer & Solution
Correct answer: B. Produces lactate without releasing CO2
**Lactic acid fermentation:** pyruvate is reduced directly to lactate, regenerating NAD+. No CO2 is released.
**Alcoholic fermentation:** pyruvate is first decarboxylated to acetaldehyde (releasing CO2), then reduced to ethanol.
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