Which of the Following is NOT a Terminal Electron Acceptor

Question

Which of the following is NOT a terminal electron acceptor in anaerobic respirations?
A) nitrate
B) nitrite
C) hydrogen sulfide
D) carbon dioxide
E) sulfate

Accepted Answer

Hydrogen sulfide is not a terminal electron acceptor in anaerobic respiration; instead, it is often a product of such processes. Terminal electron acceptors like nitrate, nitrite, carbon dioxide, and sulfate are used by different microorganisms to accept electrons at the end of the electron transport chain in the absence of oxygen.