Question

which describes the process of fermentation?
lactic acid fermentation
alcohol fermentation
options:

• anaerobic process that restores nad+ supply
• aerobic process that restores nad+ supply
• anaerobic process that manufactures pyruvate
• aerobic process that manufactures pyruvate

Explanation:

Fermentation is an anaerobic process (occurs without oxygen). In both lactic acid and alcoholic fermentation (shown in the diagrams), NADH is converted back to NAD⁺, which is used in glycolysis. Pyruvate is produced by glycolysis (not fermentation), so options about manufacturing pyruvate are wrong. Aerobic processes require oxygen, but fermentation is anaerobic. So the correct description is an anaerobic process that restores NAD⁺ supply.

Answer:

A. anaerobic process that restores NAD+ supply