Why does the lactic acid pathway predominate in anaerobic respiration?

Why does the lactic acid pathway predominate in anaerobic respiration?
A . because the lactic acid can be made into oxygen when needed
B . because O2 is needed for the creation of NADH
C . because O2 is required for glycolysis
D . without O2 there is no electron acceptor for the ETC

View Answer

Answer: D

Explanation:

Lactic acid fermentation, a method of anaerobic respiration, is relied upon to generate energy for cells in the absence of oxygen.

However, because oxygen acts as the primary electron acceptor in aerobic respiration, the lactic acid pathway, lacking oxygen, contains no electron acceptor in the process.