Similarities between photophosphorylation and oxidative photophosphorylation?

Answer 1

The chemiosmosis theory postulates that living cells produce ATP from a proton gradient across a membrane by an enzyme called ATP synthase. Animals generate this proton gradient with the mitochondrial electron transport chain. When reductants (NADH, FADH2) give up their electrons to the electron transport chain, the electrons move to increasingly stronger oxidizing agents, using the released energy to pump protons across the mitochondrial inner membrane. Plants, however, generate the proton gradient directly with the photosystems and the photosynthetic electron transport chain. When the photosystem becomes excited, water is split into protons, oxygen and electrons. The electrons are then passed into the photosynthetic electron transport chain, which is analogous to the mitochondrial electron transport chain in that it also uses the energy of the oxidation reactions to pump protons across the thylakoid membrane. The end result is the same, however, because the proton gradient generates proton motive force, which is then used to synthesize ATP with ATP synthase.

Answer 2

Both processes involve the generation of ATP through the transfer of electrons in the electron transport chain in chloroplasts (in photophosphorylation) and mitochondria (in oxidative phosphorylation). Both processes depend on proton gradients across a membrane to drive ATP synthesis. Additionally, both processes require the involvement of ATP synthase to convert ADP and inorganic phosphate into ATP.

Answer 3

Either way, someones getting phosphorylated.

Answer 4

the similarities are removing a phosphate group.