Question

In the electron transport system, the reduced coenzymes are regenerated by

• A. Loss of hydrogen
• B. Loss of electrons
• C. Addition of oxygen
• D. None of the above

Answer 1

Answer: (B)

Loss of electrons

Oxidation Is Loss of electrons and Reduction Is Gain of electrons (OILRIG). In the electron transport system, the reduced coenzymes (eg. NADH) are regenerated by transferring their electrons to the components of electron transport chain. Thus they are regenerated by losing the electrons. So, the correct option is B.