Light phase of photosynthesis.

A photon of light hits the thylakoid and transforms the electron into an excited state. Light also hits water molecules and begins photolysis to hydrogen and oxygen (as a by-product). Outside, the excited electrons and inside the protons form a potential difference, under which, through ATP-kinase, ADP passes into ATP, just when the protons of the internal contents of the thylakoid are released. Hydrogen is fixed and reduced to NADP H. Then the dark phase begins: the stomata fix carbon dioxide, the naph is oxidized and gives off H, and ATP is consumed. In the Kalvin cycle, Glucose is formed, which can accumulate and turn into starch or leave as a consumable for the color of fruits, etc.