BI110 Chapter Notes - Chapter 30: Endergonic Reaction, Light-Independent Reactions, Disaccharide
Document Summary
Photosystem ii: absorbs 680 nm light waves (p680: slightly diferent. All pigments in light harvesing complexes are moving. Electrons in p680 raised from ground state to excited state p680* P680* oxidized t p680+ by primary electron acceptor pheophyin (pheo: * means gone to higher energy state. Pheo transfers electrons to pq: shutles electrons over to cytochrome complex. P680 is reformed when p680+ gains an electron from oxidaion of h20: water spliing complex. More oxygen being produced more electrons. Linear electron transport 1 oxidaion of p680 in photosystem ii. When things get reduced, they"re accompanied by protons (also with pq: picks proton up by stroma, then gives up proton o opposite side of membrane. Electron given up by chlorophyll and transferred to plasoquinone (pq) is replaced by oxidaion of water. Pq also takes h+ from stroma, migrates thru lipid bilayer: donates electron to cytosome b6/f complex, releases h+ into lumen. Absorpion of light by ps i results in formaion of p700*
