In this article we will discuss about:- 1. Definition of Oxidative Phosphorylation 2. Chemiosmotic Hypothesis and Oxidative Phosphorylation 3. Inhibition. Definition of Oxidative Phosphorylation: Oxidative phosphorylation is the process by which energy from electron transport chain (respiratory chain) is used to make ATP, and is the culmination of energy yielding metabolism in aerobic organisms. Oxidative phosphorylation involves the reduction of [...]
Substrate-level phosphorylation is a process in which ATP is synthesized as a result of the oxidation of an organic compound, the substrate, without the participation of any external electron donor (e.g., NADH) or external electron acceptor (e.g., O2). That is, in substrate-level phosphorylation the involved organic compound itself serves as both electron donor (becomes oxidized) and electron acceptor (becomes reduced) [...]
Anaerobic respiration is an alternate mode of energy generation in which an exogenous electron acceptor other than O2 is used in electron transport chain leading to a proton motive force. In contrast to aerobic respiration where O2 is used as electron acceptor, the electron acceptors used in anaerobic respiration include nitrate (NO-,3)), sulphate (SO2-4), carbonate (CO2), ferric ion (Fe3+), and [...]