BIOL 1201 Chapter : Biology Chapter 10
Document Summary
Liner electron flow, the primary pathway, involves both photosystems and produces atp and. Nadph using light energy: a photon hits a pigment and its energy is passed among pigment molecules until it excites p680, an excited electron from p680 is transferred to the primary electron acceptor (we now call it. P680+: h o is split by enzymes, and the electrons are transferred to p680+, thus reducing it backl to. P680: o is released as a by-product, each electron falls down an electron transport chain from the primary electron acceptor of ps. Ii to ps i: energy released by e- transport drives the creation of an h+ gradient across the thylakoid membrane. In most plants (c3 plants), initial fixation of co , via rubisco, forms a three-carbon compound (3-phosphoglycerate: plants store excess sugar as starch, photorespiration. Increasing levels of at atmospheric co may: affect c3 and c4 plants differently, perhaps changing the relative abundance of species, cam plants.
