LIFESCI 2 Lecture Notes - Lecture 10: Thylakoid, Light-Independent Reactions, Photosynthetic Reaction Centre

• School: UCLA
• Department: Life Sciences
• Course: LIFESCI 2
• Professor: Arnold, A.P., Esdin, J.

Document Summary

Photosynthesis: plants, algae, unicellular protists, cyanobacteria, 6co2 +12h2o+lightenergy c6h12o6 +6o2 +6h2o light/photon meets matter. Absorbed reflected transmitted (goes thru: energy & wavelength reversely proportional if absorbed, pigment gets energy of photon interested in absorption of light by chloroplasts light quantified by photon; each photon has fixed amount of energy. Plant absorbs certain photons/ certain amount of energy. Molecule moves from ground state to excited state/bumps electron to higher shell. Double membrane thylakoid membrane has chlorophylls reaction center (in photosystem) light dependent reaction. Photosystem: network of molecules that are connected & transfer energy from light. Pigment absorbs energy -> excited state-> later energy transferred to anther pigment -> energy transferred to reaction center eventually -> reaction center releases energy & e- -> becomes unstable -> primary acceptor takes e-, undergoes etc. Photosystem ii use enzyme to hydrolysis (break water molecule) -> e- returned to reaction center.