Microbiology
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Boundless Microbiology
Microbial Metabolism
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Microbiology

Section 10

Chemolithotrophy

Book Version 6
By Boundless
Boundless Microbiology
Microbiology
by Boundless
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8 concepts
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The Energetics of Chemolithotrophy

Chemolithotrophs use electron donors oxidized in the cell, and channel electrons into respiratory chains, producing ATP.

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Hydrogen Oxidation

While there are several mechanisms of anaerobic hydrogen oxidation, organisms can also use hydrogen as an energy source aerobically.

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Oxidation of Reduced Sulfur Compounds

Sulfur oxidation involves the oxidation of reduced sulfur compounds, inorganic sulfur, and thiosulfate to form sulfuric acid.

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Iron Oxidation

Ferric iron is an anaerobic terminal electron acceptor, with the final enzyme a ferric iron reductase.

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Nitrification

Nitrification is the process by which ammonia (NH3) or ammonium (NH4+) is converted to nitrite (NO2-) and then nitrate (NO3−) by bacteria.

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Anammox

Anammox, an abbreviation for ANaerobic AMMonium OXidation, is a globally significant microbial process of the nitrogen cycle.

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Benzoate Catabolism

Rhodobacter sphaeroides is able to produce hydrogen from a wide range of organic compounds (chiefly organic acids) and light.

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Polycyclic Aromatic Hydrocarbons

Polycyclic aromatic hydrocarbons are potent atmospheric pollutants that consist of fused aromatic rings and do not contain heteroatoms.

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