O

use light as an energy source; in contrast, chemotrophs use chemical forms of energy. These fundamental groups may be subdivided into organotrophs, for which the electron source is organic; lithotrophs, for which the electron source is inorganic; or aquatrophs, for which it is water. Organisms that use an organic form of C are referred to as heterotrophs; those that use CO2 as C source are called autotrophs. Most heterotrophs are chemoorganotrophs (e.g., Pseudomonas spp., but some such as Rhodospirillaceae are chemophototrophs). Most autotrophs are chemolithotrophs or photolithotrophs. Some, such as the H2-oxidizing bacteria (6H2 + CO2 + 2O2 ^ CH2O + 5H2O), are facultative chemolithotrophs capable of growing on carbohydrates under aerobic conditions (see Gottschalk, 1986).

Worm Farming

Worm Farming

Do You Want To Learn More About Green Living That Can Save You Money? Discover How To Create A Worm Farm From Scratch! Recycling has caught on with a more people as the years go by. Well, now theres another way to recycle that may seem unconventional at first, but it can save you money down the road.

Get My Free Ebook


Post a comment