Light energy absorbed by chlorophyll, excites electrons
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Stage Two
(photoionisation)
Releases electrons as raised energy levels
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Stage Three
(electron transport chain)
Electron passes along carriers through a series of oxidation and reduction reactions, every time an electron carrier, it loses a small amount of energy to the phosphorylation reaction (production of ATP)
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Stage Four
(electron transport chain)
NADP is reduced, as electrons are accepted by co-enzymes to produce NADPH
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Stage Five
(photolysis of water)
Light splits a molecule of water up into a hydrogen ion, an electron and oxygen
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Stage Six
(photolysis of water)
The hydrogen ion reduces NADPH to NADP
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Stage Seven
(photolysis of water)
The electron reduces chlorophyll to its original state
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Stage Eight
(photolysis of water)
Oxygen is a waste product used in respiration or released into atmosphere
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Stage Nine
(chemiosmotic theory)
A hydrogen ion + ATP synthase is used to make more ADP + Pi which phosphorylates to ATP
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