Granum stack of thylakoids Thylakoid lumen C3 C4 Kranz Anatomy CAM Open Closed

Granum stack of thylakoids thylakoid lumen c3 c4

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Granum (stack of thylakoids)Thylakoid lumen
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C3C4 - Kranz AnatomyCAM??
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OpenClosedGuard cellsSubsidiary cells
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Energy for ReactionsLight-dependent reactionslight energizes electrons that generate ATP and NADPH Carbon fixation reactionsuse energy of ATP and NADPH to form carbohydrate
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Photosynthesis
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The PhotosystemsPhotosystems I and II photosynthetic unitsinclude chlorophyll, accessory pigmentsorganized with pigment-binding proteins into antenna complexes
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Reaction CentersReaction center of antenna complexspecial pair of chlorophyll a molecules release energized electrons to acceptorP700reaction center for photosystem IP680reaction center for photosystem II
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How a Photosystem Works
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(a) How a photosystem harvests lightThylakoid membranePhotonPhotosystemSTROMALight-harvestingcomplexesReaction-centercomplexPrimaryelectronacceptorTransferof energySpecial pair ofchlorophyll amoleculesPigmentmoleculesTHYLAKOID SPACE(INTERIOR OF THYLAKOID)e
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Summary ReactionsLight-dependent reactions (noncyclic electron transport)12 H2O + 12 NADP++ 18 ADP + 18 Pi→ (light energy, chlorophyll) → 6 O2+ 12 NADPH + 18 ATP
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Photosystem IIPhotosystem IMillmakesATPATPNADPHeeeeeeePhotonPhoton
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CytochromecomplexPrimaryacceptorPrimaryacceptorH2OO22 H+1/2P680LightPigmentmoleculesPhotosystem II(PS II)Photosystem I(PS I)PqPcATP12356Electron transport chainP700Lightee4eee- acceptorNADP+ ReductaseNADP+ NADPH
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STROMA(low Hconcentration)STROMA(low Hconcentration)THYLAKOID SPACE(high Hconcentration)LightPhotosystem IICytochromecomplexPhotosystem ILightNADPreductaseNADP+ HToCalvinCycleATPsynthaseThylakoidmembrane213NADPHFdPcPq4 H+4 H++2 H+H+ADP+P iATP1/2H2OO2
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Thylakoid lumenThylakoid membranePhotosystemIIPhotonThylakoidmembranePlastocyaninPlastoquinoneFerredoxinCytochromecomplexPhotosystem IPhotonFerredoxin-NADP+reductaseNADPHNADP+ADPPiATPATPsynthase
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PhotophosphorylationPhotophosphorylation
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