Question

Which of the following is/are common to chemiosmosis and the light-dependent reactions of photosynthesis? electron transport only reduction of NADP+ only a proton gradient only both electron transport and a proton gradient electron transport, a proton gradient, and reduction of NADP+

Answer 1

Both electron transport and a proton gradient

Step-by-step explanation:

The process of oxidative phosphorylation in mitochondria and electron transport chain in photosynthesis undergo chemiosmosis to produce ATP molecules.

Chemiosmosis is a process where the energy utilized by the movement of proton and electrons produces ATP molecules.

Both the processes involve the movement of electrons through electron carriers where the reduced energy is utilized to drive the flow of protons through the plasma membrane. This creates a proton gradient across the plasma membrane which rotates the ATP synthase and converts the ADP molecules into ATP molecules.

Thus, the selected option is correct.