BioScience Dictionary

 
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Ot.

Found Electron donor 8 times.

Displaying results 1 to 10.

1. Chlorophyll
A green, light-absorbing pigment found in plants and other photosynthetic organisms. A magnesium-porphyrin complex, it is an essential electron donor in photosynthesis .

2. Electron donor
A molecule or compound that gives up electrons in an oxidation-reduction reaction.

3. Lithotroph
In reference to energy source ( electron donor ): An organism which uses an inorganic substrate (such as ammonia, hydrogen) as an electron donor in energy metabolism. There are two types of lithotrophs: chemolithotroph and photolithotroph. Compare with autotroph , heterotroph , organotroph , and phototroph .

4. Mixotroph
An organism able to assimilate organic compounds as carbon sources while using inorganic compounds as electron donor s. Compare with autotroph and heterotroph .

5. Organotroph
In reference to energy source ( electron donor ) - An organism which obtains energy by the metabolism of organic substrates (as electron donors). There are two type of organotrophs: chemoorganotroph and photoorganotroph. Compare with autotroph , lithotroph , heterotroph , phototroph .

6. Reduction potential
The inherent tendency of a compound to act as an electron donor or an electron acceptor . Measured in volts.

7. Reverse electron transport
The energy-dependent movement of electrons against the thermodynamic gradient to form a strong reductant from a weaker electron donor.

8. Sulfate-reducing bacterium (sulfate-reducing bacteria)
A prokaryote which is able to reduce sulfate SO42- (as a terminal electron acceptor) using electrons donated from organic acids, fatty acid s, alcohol s or hydrogen (electron donors).