Question Detail
Question
What is the fate of electrons transferred to oxygen in the mitochondria?
Correct Answer
Option B is the correct answer.
Detailed Explanation
At the end of the electron transport chain (Complex IV), oxygen acts as the final electron acceptor. Each oxygen molecule accepts four electrons and combines with four protons from the matrix to form two molecules of water (O2 + 4e- + 4H+ → 2H2O).
Hint
This is why we breathe in oxygen.