Question

Which is the end product of oxidative phosphorylation?
(A)ATP
(B)ATP +${H_2}O$
(C)NADH
(D)Oxygen

Answer 1

Oxidative phosphorylation is that cycle in which ATP is made as a result of the transfer of electrons from NADH or ${FADH_2}$ to ${O_2}$ by a sequel of electron carriers. This method, which seizes place in mitochondria, is a crucial basis of ATP in aerobic organisms.

Complete answer:
Oxidative phosphorylation is composed of two closely relevant components: the electron transport chain and chemiosmosis.
The following steps are of oxidative phosphorylation:
1.Transfer of electrons by NADH and ${FADH_2}$
Diminished electron carriers (NADH and ${FADH_2}$) from other phases of respiration transfer their electrons to molecules near the onset of the transport chain.
2.Electron transfer and proton pumping. As electrons drop the chain, they go from a higher to lower energy status, releasing energy. Some of the energy is utilized to pump $H^+$, pushing them out of the matrix and into the intermembrane area. This pumping organizes an electrochemical gradient.
3.Dividing oxygen to constitute water. At the end of the electron transport chain, electrons are transported to molecular oxygen, which divides in half and takes up $H^+$ to build water.
4.Synthesis of ATP. As $H^+$ ions flow down their gradient and go back into the matrix, they depart through an enzyme called ATP synthase, which restricts the flow of protons to synthesize ATP.

Option (A)ATP
This option is not correct.
Option (B)ATP + ${H_2}O$
The procedure generates the 2 pyruvate molecules with 2 water molecules, 2 ATP, 2 NADH molecules, and 2 hydrogen ions. At the end of electron transport, oxygen is the last electron acceptor, and it merges also with hydrogen ions to create ${H_2}O$. The end product of oxidative phosphorylation would be ATP molecules, which transmit power.
Option (C)NADH
This option is not correct.
Option (D)Oxygen
This option is not correct.
Thus, the correct answer is Option (B)- ATP + ${H_2}O$.

Note: Oxidative phosphorylation is the metabolic route in which cells employ enzymes to oxidize nutrients, thereby discharging the chemical energy stored within to generate adenosine triphosphate. In most eukaryotes, this takes place inside the mitochondria. Almost all aerobic organisms perform oxidative phosphorylation.