If the $\Delta$G for the oxidation of NADH by oxygen is -220 kJ/mol and the $\Delta$G for transport of H⁺ across the inner membrane is 20 kJ/mol, what is the efficiency for energy captured in the proton gradient versus energy evolved from NADH oxidation?

Question

Quizplus · Accepted Answer

The efficiency is calculated as the ratio of energy captured in the proton gradient to the energy evolved from NADH oxidation, which is $ \frac{20}{220} \times 100\% = 9.1\%$. However, the question asks for the energy captured versus evolved, so the correct calculation should be $ \frac{220 - 20}{220} \times 100\% = 91\%$.

If The Δ\DeltaΔ G for the Oxidation of NADH by Oxygen Is -220

If The $\Delta$ G for the Oxidation of NADH by Oxygen Is -220