BSC 2010C Lecture Notes - Lecture 9: Photosystem I, Thylakoid, P700
Document Summary
Photosynthesis- converts lights (sun) energy into chemical energy. Mesophyll- tissue in the interior of the leaf. Stoma- microscopic pore surrounded by guard cells in the epidermis of leaves and stems that allows gas exchange b/w the environment and the interior of the plant. Stroma- the dense fluid within the chloroplast surrounding the thylakoid membrane and containing ribosomes and dna. Often exist in stacks called grana that are interconnected. Chlorophyll- a green pigment located in membranes within the chloroplasts of plants and algae and in the membranes of certain prokaryotes. 2 types of photosystems: i (p700) & ii (p680) Uses atp (energy) & nadph (reducing power) from light reactions. Photophosphorylation- the process of generating atp from adp and phosphate by means of chemiosmosis, using a proton-force generated across the thylakoid membrane of the chloroplast or the membrane of certain prokaryotes during light reactions of photosynthesis. Light reactions capture light but don"t make sugar.
