electron transport chain is located in membrane in bacteria.
electron transport chain is located in membrane in bacteria.
where is electron transport chain located in bacteria?
membrane
oxidative phosphorylation works by using energy-releasing chemical reactions to drive energy-requiring reactions: the two sets of reactions are said to be "coupled". this means one cannot occur without the other. the flow of electrons through the electron transport chain, from electron donors such as nadh to electron acceptors such as oxygen, is an exergonic process – it releases energy, whereas the synthesis of atp is an endergonic process, which requires an input of energy. both the electron transport chain and the atp synthase are embedded in a membrane, and energy is transferred from electron transport chain to the atp synthase by movements of protons across this membrane, in a process called "chemiosmosis". in practice, this is like a simple electric circuit, with a current of protons being driven from the negative n-side of the membrane to the positive p-side by the proton-pumping enzymes of the electron transport chain. these enzymes are like a battery, as they perform work to drive current through the circuit. the movement of protons creates an electrochemical gradient across the membrane, which is often called the "proton-motive force". it has two components: a difference in proton concentration (a h gradient, δph) and a difference in electric potential, with the n-side having a negative charge.
oxidative phosphorylation
electrons may enter an electron transport chain at the level of a mobile cytochrome or quinone carrier. for example, electrons from inorganic electron donors (nitrite, ferrous iron, etc.) enter the electron transport chain at the cytochrome level. when electrons enter at a redox level greater than nadh, the electron transport chain must operate in reverse to produce this necessary, higher-energy molecule.









































section::::in bacteria.:terminal oxidases and reductases.
electron transport chain