In Mechanism, Photophosphorylation is Most Similar To

Question

In mechanism, photophosphorylation is most similar to
A) substrate-level phosphorylation in glycolysis.
B) oxidative phosphorylation in cellular respiration.
C) the Calvin cycle.
D) carbon fixation.
E) reduction of NADP⁺.

Accepted Answer

Photophosphorylation is the process by which light energy is used to generate ATP from ADP and inorganic phosphate in the thylakoid membrane during photosynthesis. This process is similar to oxidative phosphorylation in cellular respiration, where ATP is generated by the electron transport chain as electrons move down the chain and the energy released is used to pump protons across the inner mitochondrial membrane. Both processes generate ATP through a proton gradient and involve electron transport chains.