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Monique
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#7
Jun2-06, 01:00 PM
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Quote Quote by selfAdjoint
..and where does the free energy come from?
What do you mean, the free energy comes from the oxidation of (in)organic compounds.

There are different kinds of chemotrophy:
chemoautotroph- Organism that obtains energy from the oxidation of reduced inorganic compounds or elements and obtains carbon from carbon dioxide.
chemolithotroph- Organism that obtains energy from the oxidation of inorganic compounds and uses inorganic compounds as electron donors.
chemoheterotroph- Organism that obtains energy and carbon from the oxidation of organic compounds (we humans).
chemoorganotroph- Organism that obtains energy and electrons (reducing power) from the oxidation of organic compounds.