Question

Choose the correct answers from the alternatives given :
Chemiosmotic phosphorylation is dependent upon

• A. the ability of ADP? to join with P even in the absence of a supply of energy
• B. the establishment of an electrochemical hydrogen ion $\left(H^{+}\right)$ gradient
• C. an outside supply of phosphate and other chemicals
• D. the diffusion of waste across a differentially permeable membrane

Answer 1

The correct option is B the establishment of an electrochemical hydrogen ion $\left(H^{+}\right)$ gradient

• Chemiosmotic phosphorylation is the process where ATP is formed by the ATP synthase complex which is present in the inner membrane of the mitochondria.
• The formation of ATP by this complex takes place when 2 hydronium ions are transported across the complex from the inter membrane space down its concentration gradient.
• Thus the formation of ATP in this process takes place due to the concentration gradient that is formed by the presence of hydronium ion that is formed by the ETS Chain when the electron along with hydronium ions are transported from the NADH and FADH.
• Therefore the answer 'the establishment of an electrochemical hydrogen ion (H+) gradient' is correct.