An electron transport chain(ETC) couples a chemical reaction between an electron donor (such as NADH) and an electron acceptor (such as O2) to the transfer of H+ ions across a membrane, through a set of mediating biochemical reactions. These H+ ions are used to produce adenosine triphosphate (ATP), the main energy intermediate in living organisms, as they move back across the membrane. Electron transport chains are used for extracting energy from sunlight (photosynthesis) and from redox reactions such as the oxidation of sugars (respiration).
In chloroplasts, light drives the conversion of water to oxygen and NADP+ to NADPH and a transfer of H+ ions. NADPH is used as an electron donor for carbon fixation. In mitochondria, it is the conversion of oxygen to water, NADH to NAD+ and succinate to fumarate that drives the transfer of H+ ions. While some bacteria have electron transport chains similar to those in chloroplasts or mitochondria, other bacteria use different electron donors and acceptors. Both the respiratory and photosynthetic electron transport chains are major sites of premature electron leakage to oxygen, thus being major sites of superoxide production and drivers of oxidative stress.
The purpose of electron carriers such as NADH and FADH2 is to dump electrons at the electron transport chain. This creates a proton gradient and allows oxidative phosphorylation to take place.
Transport ... of people and things.
it includes the passage of electrons along electron transport chain and produces NADPH and oxygen, and the synthesis of ATP. it includes the passage of electrons along electron transport chain and produces NADPH and oxygen, and the synthesis of ATP.
The electron transport chain (ETC) is on/in the innermost membrane of the mitochondrion and/or chloroplast (i.e. plants and photosynthesizing protists like algae), which are organelles of a eukaryotic cell. It's actually embedded into the inner membrane of a mitochondria or the thylakoid membrane of the chloroplast which plays a part in keeping the gradient that the ETC produces (remember, it's purpose is the push H+ against its gradient using electron energy).
In botany, xylem are a type of vessel in a plant. Its main purpose is to transport water and minerals from the roots to the rest of the plant.
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Electron transport in the mitochondria supplies energy by generating ATP through the transfer of electrons along the electron transport chain.
The purpose of electron carriers such as NADH and FADH2 is to dump electrons at the electron transport chain. This creates a proton gradient and allows oxidative phosphorylation to take place.
the main purpose of a car is to transport people & belongings to another location from where you started
The purpose of electron carriers such as NADH and FADH2 is to dump electrons at the electron transport chain. This creates a proton gradient and allows oxidative phosphorylation to take place.
The mitochondrial membrane is impermeable to the H+ ions.
It is to carry out electron transport chain. The last step of respiration
the main purpose of glycolysis is to produce high-energy electrons for use in the electron transport chain.
To use energy from the passing of electrons in electron carriers into a high concentration of hydrogen ions
nitrogen
Oxygen
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