What is the final electron acceptor in the electron transport chain?
Before taking you to the answer directly, let us tell you what the electron transport chain is:
The electron transport chain is like an energy transporter and is present in particular parts of our cells known as mitochondria. This energy transport belt comprises many helpers, which are electrons, and they help pass along the energy.
The energy chain starts from the electron passing protein bounds from a molecule NADH to the inner membrane through a series of redox reactions. It results in releasing energy.
What is the full form of NADH?
The full name of NADH is:
"nicotinamide adenine dinucleotide (NAD) + hydrogen (H)."
So, Finally, at the end of the chain, the electrons meet an important molecule called Oxygen.
Oxygen acts like a "finish line" for the electrons. It accepts the electrons and combines with protons to form water, which our bodies need.
ETC is based on the positive powers of molecules, and Since the Oxygen molecule has the highest electronegativity and therefore is the final electron acceptor in the electron transport chain.
The final electron acceptor is Oxygen (O2).
