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Methanogenic - University of Maryland

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GROUP I<br />

FERMENTATIVE<br />

BACTERIA<br />

GROUP II<br />

H2-PRODUCING ACETOGENIC BACTERIA<br />

SULFIDOGENIC BACTERIA<br />

GROUP III<br />

METHANOGENIC ARCHAEA<br />

SULFIDOGENIC BACTERIA<br />

GROUP I<br />

FERMENTATIVE<br />

BACTERIA<br />

GROUP III<br />

METHANOGENIC ARCHAEA<br />

Marine Sediments<br />

COMPLEX POLYMERS<br />

(proteins, polysaccharides, etc.)<br />

MONOMERS/POLYMERS<br />

(sugars, amino acids, peptides)<br />

FATTY ACIDS<br />

PRIMARY ALCOHOLS<br />

AROMATICS<br />

HYDROGEN<br />

CO 2<br />

H 2 S, CH 4 ,<br />

CO 2<br />

ACETATE<br />

Animal Rumen<br />

COMPLEX POLYMERS<br />

(proteins, polysaccharides, etc.)<br />

MONOMERS/POLYMERS<br />

(sugars, amino acids, peptides)<br />

HYDROGEN<br />

CO 2<br />

FATTY ACIDS<br />

PRIMARY ALCOHOLS<br />

AROMATICS<br />

RUMINANT<br />

CH 4 , CO 2<br />

ACETATE<br />

Hydrothermal Vents<br />

GROUP III<br />

METHANOGENIC ARCHAEA<br />

HYDROGEN<br />

CO 2<br />

CH 4 , CO 2<br />

METHYLAMINO<br />

METHYLTHIO<br />

OSMOLYTES<br />

METHYLAMINES<br />

METHYL SULFIDES<br />

CH 4 , CO 2

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