Which of the Following Can Be Used as Electron Acceptors

Question

Which of the following can be used as electron acceptors during anaerobic respiration?
A)Nitrate
B)Sulfate
C)Carbon dioxide
D)All of the choices are correct.

Accepted Answer

All three choices can function as electron acceptors during anaerobic respiration. Nitrate is reduced to nitrogen gas, sulfate is reduced to hydrogen sulfide, and carbon dioxide can be reduced to methane or other organic compounds.