3-30-09_Notes

3-30-09_Notes - -In this case, photosystem I becomes...

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- Ripping H away from protons - Pumping - Even though protons are not traveling through membrane - 2 H2O + 2 Quinone - For each H, 4 photons of light are absorbed, 4 electrons - Cytochrome bf is also pumping protons - Using dihydrogen quinine - Formation of acididty iin lumen - Picking up 2 protons for every 4 protons deposited in stroma - 2 binding sites - No description of Q cycle - Cytochrome bf needs 2 PC (Cu++) - Taking 2 protons from stroma   lumen  - Semisequinone intermediate  - Mechanism for making NADPH - Z scheme summarizes entire process - Lumen side to stromal side of PH 1 & PH 2 - Electrons moved, protons left behind  - Can make ATP from added ADP - Have to acidity it - Acidification is all that is needed to enable a chloroplast to make ATP - Can use up all of NADP+ to make NADPH
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Unformatted text preview: -In this case, photosystem I becomes non-functional-Cyclic phosphorylation occurs when all NADPH NADP+-Ferredoxin works with cytochrome bf-Keeps cycling this way to make ATP and NADPH-Cartenoids suppresses oxidative damage by sunlight and accounts for most of the yellow and red colors n fruit and flowers-They provide colors of the fall when chlorophyll gets degraded--carotene is responsible for fall colors, while Lycopene is responsible for red and yellow colors-Lycopene found a lot in tomatoes -Prevent oxidative damage to our tissues -DONT NEED TO KNOW PENTOSE PHOSPHATE PATHWAY FOR MIDTERM, CONCENTRATE ON CALVIN CYCLE!-Focus on reaction by ribulose to 3-phosphoglycerate in fixation of CO2...
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