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Chemoautotroph

Definition

noun, plural: chemoautotrophs

An organism (typically a bacterium or a protozoan) that obtains energy through chemical process, which is by the oxidation of electron donating molecules from the environment, rather than by photosynthesis.


Supplement

Chemotrophs obtain energy mainly from carbon dioxide and from other inorganic chemicals. Chemotrophs can be chemoautotrophs or chemoheterotrophs.


Word origin: chemo- (chemical) + troph (nourishment).
Related forms: chemotrophic (adjective)


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Chemoautotroph

How does chemoautotrotrophs obtain energy?

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by kumar985
Thu Jul 19, 2012 4:27 pm
 
Forum: Microbiology
Topic: Chemoautotroph
Replies: 1
Views: 2636

Calvin cycle and chemoautotrophy? Please help!

... the ability to use Sulfer as an electron source and O2 as an electron receptor to generate ATP in aerobic respiration. This bacteria is also a chemoautotroph and uses the calvin cycle. What two products from aerobic respiraton can feed into the Calvin cycle to fix CO2? Any help is appreciated.

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by thisisme1886
Sun May 10, 2009 4:41 pm
 
Forum: Molecular Biology
Topic: Calvin cycle and chemoautotrophy? Please help!
Replies: 1
Views: 2325

Prokaryotes!

Huh really? If you consider plants, the only one that eukaryotes don't really do is chemoautotroph. A broader question you should ask is why are bacteria so diverse? From that I think you can argue why they eat more things.

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by mith
Sat Feb 09, 2008 5:59 pm
 
Forum: Microbiology
Topic: Prokaryotes!
Replies: 4
Views: 2746

HELP ME PLEASE ......!!

... to its energy source? Not familiar with terms & I’m too lazy to look them up a.photoheterotroph- light b.photoautotroph-carbon dioxide c.chemoautotroph- Fe2+ d.chemoheterotroph-glucose e.chemoautotroph - Nh3 3. Which of the following statements about aerobic respiration is false ? A a. ...

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by BCH04
Mon Jun 18, 2007 4:15 pm
 
Forum: General Discussion
Topic: HELP ME PLEASE ......!!
Replies: 12
Views: 39204

HELP ME PLEASE ......!!

... to its energy source? Not familiar with terms & I’m too lazy to look them up a.photoheterotroph- light b.photoautotroph-carbon dioxide c.chemoautotroph- Fe2+ d.chemoheterotroph-glucose e.chemoautotroph - Nh3 3. Which of the following statements about aerobic respiration is false ? A a. ...

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by blcr11
Mon Jun 18, 2007 1:58 pm
 
Forum: General Discussion
Topic: HELP ME PLEASE ......!!
Replies: 12
Views: 39204
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