Light Reactions Flashcards
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photon hits chlorophyll molecule around photosystem ii
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creates resonance energy, transferred through neighboring chlorophyll molecules
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energy reach reaction center, excited electron released
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two electrons excited and transferred to mobile carrier, also picks up two protons from the stroma
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two electrons lost from photosystem ii replaced by splitting of water molecules, also releases hydrogen ions into the lumen, contributes to h+ gradient
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after two water molecules split, one molecule of molecular oxygen created
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mobile carrier transfers two electrons to cytochrome b6f complex, protons released into lumen
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more hydrogen ions pumped into lumen by cytochrome b6f
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electrons transferred to another mobile carrier
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mobile carrier transfers electrons to photosystem i
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photons energize electrons again, propel their transfer to ferredoxin
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ferredoxin transfers electrons to FNR
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two electrons transferred to FNR, NADPH made by adding two electrons and hydrogen ion to NADP+
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gradient created by electron transport chain used by ATP synthase to make ATP
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ATP, NADPH, and molecular oxygen are final products
