Roskoski, Robert, Jr. Blue Ridge Institute for Medical Research, Horse Shoe, North Carolina.
Last reviewed:February 2019
Show previous versions
- Biological oxidation-reduction reactions
- Direct transfer of an electron
- Electrons transferred with protons
- Transfer of a hydride ion
- Electron transfer via direct reaction with oxygen
- Oxidative phosphorylation
- Mitochondrial electron transport
- Proton translocation in oxidative and photosynthetic phosphorylation
- Reactive oxygen species
- Related Primary Literature
- Additional Reading
A biochemical reaction involving the transfer of a negatively charged electron from one organic compound to another organic compound or to oxygen. Biological oxidation is an energy-producing reaction in living cells, and it is coupled with a reduction reaction (Fig. 1). When a compound loses an electron, or is oxidized, another compound gains the electron, or is reduced. Oxidation-reduction (redox) reactions represent the main source of biological energy. Oxidation and reduction reactions occur simultaneously, and one does not occur without the other. The principal sources of reductants for animals are the numerous breakdown products of the major foodstuffs—carbohydrates, fats, and proteins. Energy release from these substances occurs in a stepwise series of hydrogen and electron transfers to molecular oxygen. See also: Electron; Electron-transfer reaction; Oxidation-reduction; Oxygen
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information