BI110 Chapter Notes - Chapter 30: Cytochrome B6F Complex, Photosystem Ii, P680
Document Summary
Module 30 - photosynthesis ii: energy and sugars. Absorbs 700 nm of light waves (p700) Electrons in p680 raised from ground state to excited state . P680* is oxidized to p680+ by primary electron acceptor pheophytin (pheo) P680* is reformed when p680+ gains an electron from oxidation of h2o. Linear electron transport i - oxidation of p680 in photosystem ii. Absorption of light by ps ii results in formation of p680* P680* oxidized to p680+ by primary electron acceptor pheophytin (pheo) Linear electron transport ii - oxidation-reduction of plastoquinone pool. Electron given up by chlorophyll and transferred to pq (plastoquinone) is replaced by oxidation of water. Pq also takes a h+ from stroma, migrates through lipid bilayer. Linear electron transport iii - electron transfer from cytochrome complex to pc. The cytochrome complex transfers electrons to plastocyanin (pc) Linear electron transport iv - oxidation reduction of p700 in ps i. Absorption of light by psi results in formation of p700*
