Question

Choose the correct answers from the alternatives given :
The final electron acceptor of the electron transport chain that functions in oxidative phosphorylation

• A. pyruvic acid
• B. oxygen
• C. water
• D. $NA{D}^{+}$

Answer 1

The correct option is B oxygen

• Electrons that are transported through the ETS are passed through various complexs of the transport chain such as complex I, cytochrome c cytochrome b, etc
• When the electrons are passed through the complexs one after the other hydrogen ions are also passed through along with it.
• After the electrons and the hydrogen have passed through the last of the complex the last acceptor of the electron in this chain will be a molecule of oxygen after reacting to which a molecule of water is formed.
• Therefore the correct answer is option 'oxygen'.