Question

Select the correct option:

Study the given figure and select the incorrect option regarding this.

• A. The figure represents chemiosmotic ATP synthesis by oxysomes where X is the mitochondrial matrix and Y is the inner mitochondrial membrane.
• B. An enzyme required for ATP synthesis is ATP synthase, considered to be the complex-V of ETS.
• C. The figure represents oxidative phosphorylation which is the synthesis of energy-rich ATP molecules with the help of energy liberated during oxidation of reduced co-enzymes (NADH,${FADH}_2$) produced in respiration.
• D. ATP synthase becomes active only when there is a proton gradient having a higher concentration of protons $\left(H^{+}\right)$ on the inner side ($F_1$ side) as compared to the outer side ($F_0$ side).

Answer 1

The correct option is D ATP synthase becomes active only when there is a proton gradient having a higher concentration of protons $\left(H^{+}\right)$ on the inner side ($F_1$ side) as compared to the outer side ($F_0$ side).

ATP synthase is located in $F_1$ or headpiece of $F_0-F_1$ or elementary particles. The particles are present in the inner mitochondrial membrane. ATP-synthase becomes active in ATP formation only when there is a proton gradient having a higher concentration of $H^{+}$ or protons on the $F_0$ side as compared to $F_1$ side. Increased proton concentration is produced in the outer chamber or outer surface of the inner mitochondrial membrane by the pushing of protons with the help of energy liberated by the passage of electrons from one carrier to another.

So the correct answer is 'D'.