BIOL 211 Lecture Notes - Lecture 12: Electrochemical Gradient, Electron Transport Chain, Acetyl-Coa

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Usable energy derived from the movement of e- through an energy gradient. Proton (ions) are transferred to form electrochemical gradient. Pmf is a form of energy storage. Aim of all 3: to produce atp, to produce nadph (reducing power) Glycolysis: glucose 2 molecules of 3c. Results in 2 pyruvate, 2 atp, and 2 nadh. Redox balance: process of generating energy from carbohydrate breakdown in a series of reactions that do not lead to any net change in redox potential. Anaerobic balance: partial breakdown of organic food without net transfer of electrons to an inorganic terminal e- acceptor ***takes place in absence of o2*** Atp is produced via substrate-level phosphorylation organic compounds serve as acceptors of electrons pyruvate and acetyl coa. Protons enter the fo subunit causing it to rotate. Three subunits rotate turn relative to f1. Fo rotation drives the f1 subunit shaft, forming atp from adp + pi. No o2 needed, grows best at low o2.

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