Definition of chemoautotroph in English:
An organism, typically a bacterium, which derives energy from the oxidation of inorganic compounds.
- These so-called chemoautotrophs use the stored energy of certain chemicals [usually sulfides such as hydrogen sulfide or iron sulfide (FeS 2)] to drive chemosynthesis.
- The reaction pathways that these chemoautotrophs employ involve the reduction of inorganic carbon compounds to form organic compounds, which include their biomolecules.
- While chemoautotrophs are uncommon, photoautotrophs are common and quite diverse.
- Example sentences
- These resemble the foot of some specialized bivalves (Solemya or Lucina) used to penetrate putrid sediment to release H 2 S consumed by symbiotic chemoautotrophic bacteria.
- They evolved towards sessile life possibly in symbiosis with photo- or chemoautotrophic microorganisms.
- ‘Our synthesis of ammonia may serve as a model for a primordial nitrogen fixing system and conforms well with theories of the chemoautotrophic origin of life,’ say the researchers.
Pronunciation: /ˌkiːməʊɔːtəˈtrəʊfɪk/ /ˌkiːməʊɔːtəˈtrɒfɪk/adjective
Definition of chemoautotroph in:
- US English dictionary
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