What is non-cyclic photophosphorylation? Explain the process and the location it takes place.
Answers
"Photophosphorylation is the process by which light is used in plants to synthesize adenosine-tri-phosphate molecules by transferring phosphate moieties to the adenosine-di-phosphate molecules. If the transfer of electrons between the photosystems I and II occur in a non-cyclic manner, then it is said to be non-cyclic photophosphorylation.
In this process, the electrons from P680 of photosystem II are irreversibly transferred to P700 of photosystem I. Then the electrons from P700 are transferred to a primary acceptor and finally to NADP. Ultimately, these electrons combine with the protons, produced by photolysis of water, and reduce NADP to NADPH2.
Since, these reactions occur in the presence of light, these are called as light reactions and they occur in the thylakoid membranes of the chloroplasts.
IMG: 21_6"
