synergism example of cross-feeding compound a population 1 compound b population 2 compound c 1 + 2...

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Synergism

Example of cross-feeding

Compound A

Population 1

Compound B

Population 2

Compound C

1 + 2

Energy + end products

Biogeochemical cyclingDescribes the transport and transformation of materials caused by biochemical activities in atmosphere, soil and marine environments.Occurs Globaly and in micro habitats

Transformations * Physical : Leaching, precipitation, evaporation and immobilization* Chemical:: Biosynthesis, biodegradation, oxidation/reduction

Microorganisms:

AssimilationBiosynthesis

BiotransformationExcretion

Methane and methanogenesis

Methanogenic bacteria 4H2 + CO2 CH4 + 2H20

Other sources (electron donors) for methan production:

CH3OH - methanol

HCOO- formate

CH3SH methyl mercaptan

CH3COO- acetate

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