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  2. Electron transport chain - Wikipedia

    en.wikipedia.org/wiki/Electron_transport_chain

    For example, electrons from inorganic electron donors (nitrite, ferrous iron, electron transport chain) 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.

  3. Hydrogen carrier - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_carrier

    The main role of these is to transport hydrogen atom to electron transport chain which will change ADP to ATP by adding one phosphate during metabolic processes (e.g. photosynthesis and respiration). Hydrogen carrier participates in an oxidation-reduction reaction [ 2 ] by getting reduced due to the acceptance of a Hydrogen.

  4. Outer sphere electron transfer - Wikipedia

    en.wikipedia.org/wiki/Outer_sphere_electron_transfer

    An example is the degenerate reaction between the tetrahedral ions permanganate and manganate: [MnO 4 ] − + [Mn*O 4 ] 2− → [MnO 4 ] 2− + [Mn*O 4 ] − For octahedral metal complexes , the rate constant for self-exchange reactions correlates with changes in the population of the e g orbitals , the population of which most strongly ...

  5. Electron transfer - Wikipedia

    en.wikipedia.org/wiki/Electron_transfer

    In such cases, the electron transfer is termed intermolecular electron transfer. A famous example of an inner sphere ET process that proceeds via a transitory bridged intermediate is the reduction of [CoCl(NH 3) 5] 2+ by [Cr(H 2 O) 6] 2+. [5] [6] In this case, the chloride ligand is the bridging ligand that covalently connects the redox ...

  6. Active transport - Wikipedia

    en.wikipedia.org/wiki/Active_transport

    An example of primary active transport using redox energy is the mitochondrial electron transport chain that uses the reduction energy of NADH to move protons across the inner mitochondrial membrane against their concentration gradient.

  7. Oxidative phosphorylation - Wikipedia

    en.wikipedia.org/wiki/Oxidative_phosphorylation

    The transport of electrons from redox pair NAD + / NADH to the final redox pair 1/2 O 2 / H 2 O can be summarized as 1/2 O 2 + NADH + H + → H 2 O + NAD + The potential difference between these two redox pairs is 1.14 volt, which is equivalent to -52 kcal/mol or -2600 kJ per 6 mol of O 2.

  8. Inner sphere electron transfer - Wikipedia

    en.wikipedia.org/wiki/Inner_sphere_electron_transfer

    Inner sphere electron transfer (IS ET) or bonded electron transfer [1] is a redox chemical reaction that proceeds via a covalent linkage—a strong electronic interaction—between the oxidant and the reductant reactants. In inner sphere electron transfer, a ligand bridges the two metal redox centers during the electron transfer event. Inner ...

  9. Oxidoreductase - Wikipedia

    en.wikipedia.org/wiki/Oxidoreductase

    For example, an enzyme that catalyzed this reaction would be an oxidoreductase: A – + B → A + B – In this example, A is the reductant (electron donor) and B is the oxidant (electron acceptor). In biochemical reactions, the redox reactions are sometimes more difficult to see, such as this reaction from glycolysis: