Question

multiple choice question
what is the final electron acceptor in the electron transport chain?

o oxygen

o carbon dioxide

o adenosine triphosphate

o lactic acid

Explanation:

In the electron transport chain (part of cellular respiration), oxygen acts as the final electron acceptor. It accepts electrons and combines with protons to form water. Carbon dioxide is a product of respiration, ATP is the energy currency, and lactic acid is a product of anaerobic respiration, not related to the electron transport chain's final electron acceptor.

Answer:

A. Oxygen