Question

multiple choice question
in anaerobic fermentation, nadh donates a pair of electrons to ______ acid.

lactic
pyruvic
acetic

Explanation:

In anaerobic fermentation (like lactic acid fermentation), NADH donates electrons to pyruvic acid. Pyruvic acid is reduced by NADH (which is oxidized to NAD⁺) to form lactic acid (in lactic acid fermentation) or other products. Lactic acid is a product, not the acceptor here, and acetic acid is not the main acceptor in this context. So the correct acid is pyruvic.

Answer:

B. pyruvic (assuming the options are labeled as A. lactic, B. pyruvic, C. acetic)