Question

which of these is considered an output of fermentation?
atp
lactic acid
pyruvate
oxygen

Explanation:

Fermentation is an anaerobic process. ATP is produced in glycolysis (a precursor to fermentation), pyruvate is a glycolysis product used as a fermentation input, and oxygen is not involved in anaerobic fermentation. Lactic acid is a direct output of lactic acid fermentation (e.g., in muscle cells), so it is an output of fermentation.

Answer:

B. lactic acid