Chemotroph
Chemotroph
Chemotrophs (pronounced: kee-mo-trofs) are organisms that obtain energy by the oxidation of electron donors in their environments. These molecules can be organic (chemoorganotrophs) or inorganic (chemolithotrophs). The chemotroph designation is in contrast to phototrophs, which utilize solar energy.
Etymology
The term "chemotroph" is derived from the Greek words "chemia" meaning "chemistry" and "trophe" meaning "nutrition".
Types of Chemotrophs
Chemotrophs can be either autotrophic or heterotrophic. Autotrophic chemotrophs, also known as chemoautotrophs, derive carbon from carbon dioxide for their organic molecules and energy from chemical reactions. Heterotrophic chemotrophs, or chemoheterotrophs, derive both carbon and energy from organic compounds.
Chemoorganotrophs
Chemoorganotrophs, also known as organotrophs, are organisms that obtain energy by the oxidation of organic compounds. These can be either autotrophic or heterotrophic.
Chemolithotrophs
Chemolithotrophs are organisms that use inorganic substrates (usually of mineral origin) to obtain reducing equivalents for use in biosynthesis.
Role in Ecosystem
Chemotrophs play a vital role in various ecosystems, especially in areas where light or organic materials are scarce. They contribute to the recycling of inorganic substances in ecosystems, which can be essential for the survival of other organisms.
See Also
External links
- Medical encyclopedia article on Chemotroph
- Wikipedia's article - Chemotroph
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