The electrons in the chlorophyll move to a higher energy level
They move along and electron transport chain to PS1
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Photolysis of water
As the electrons leave PS2 they must be replaced
Light energy splits water into protons, electrons, and oxygen
The Oxygen in photosynthesis comes from water
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Energy from excited electrons makes ATP
Electrons lose energy as they are transported and this energy is used to transport protons to the Thylakoid membranes
This is done via proton pumps so that the thylakoid has a higher concentration of Protons than the Stroma which forms a proton gradient across the membrane
Protons move down their gradient into the Stroma via ATP synthase
The energy from this combines ADP with another inorganic phosphate group
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Energy from the excited electrons generates reduce
Light energy is absorbed by PS1 which excites the electrons to an even higher energy level
They are then transferred to NADP along with a proton from the Stroma
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