a compound that gives up or donates an electron during cellular respiration, resulting in the release of energy
Compound that donates electrons (and therefore is oxidized) in the energy-producing oxidation-reduction reactions that are essential for the growth of microorganisms and bioremediation. In bioremediation the organic contaminant often serves as an electron donor.
Small inorganic or organic compound that is oxidized to initiate an electron transport chain. Compound from which electrons are derived in a metabolic redox reaction.
A chemical entity that donates electrons to another compound. It is a reducing agent that, by virtue of its donating electrons, is itself oxidized in the process.