Biology / Bio 0534 · Atom · ~20 seconds
Redox Reactions
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A redox reaction pairs oxidation, the loss of an electron, with reduction, the gain of one, since a lost electron always transfers somewhere else.
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As a carbon atom is oxidized during glucose breakdown, the electrons it loses reduce a nearby electron-carrier molecule.
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Oxidation and reduction always occur together in one reaction — neither happens to a molecule in isolation.