Question

Define the photolysis of water

Answer 1

This method is categorized as non-cyclic photophosphorylation since Photosystem II P680 's missing electrons are filled by Photosystem is P700 and are not returned to P680. Here, the electrons' complete motion is in a unidirectional or non-cyclic way.

Complete answer:
First we should know about phosphorylation to answer this question. The method of using light energy from photosynthesis to transform ADP to ATP is photophosphorylation. It is the mechanism of synthesising ATP molecules rich in energy by converting, in the presence of light, the phosphate group into ADP molecules.
Photolysis is the breakdown of water molecules into protons, electrons and oxygen in the presence of light. It occurs during photophosphorylation of non-cyclic. The energy emitted by P700 is transferred by the primary acceptor during non-cyclic photophosphorylation and is eventually passed on to NADP. The protons are often used to decrease NADP and photosystem II is fed with electrons. Here, the electrons are combined with the protons-H+ generated by dividing the water molecule and decreasing NADP to NADPH2. As a waste element, oxygen is discharged.
The photolysis of the water molecule during photosynthesis, for example, took place under the action of light. It allows the hydrogen to attach to an acceptor as photons are consumed, freeing the oxygen later.

Note: The method of photophosphorylation that results in electron movement in a non-cyclic way to synthesize ATP molecules by using energy supplied by photosystem II from excited electrons is referred as non-cyclic photophosphorylation.