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Microbiology of Soils

Microbiology of Soils
The organisms responsible for the characteristic musty or earth odor of a freshly plowed field is/are

Nocardia
all of these
Streptomyces
Micromonospora

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Microbiology of Soils
Denitrification may be distinguished as

assimilative
blue baby syndrome
both (a) and (b)
dissimilative

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Microbiology of Soils
The breakdown of cattle manure in biogas is accomplished by which of the following type of bacteria?

Transitional
methanogenic
All of these
Hydrolytic

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Microbiology of Soils
Most soil protozoa are flagellates or amoebas, having their dominant mode of nitrogen as

ingestion of fungi
ingestion of bacteria
all of these
ingestion of mold

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Microbiology of Soils
The energy value of biogas is typically

more than 5000 BTU/ft3
1500 BTU/ft3
1,000 BTU/ft3
400-700 BTU/ft3

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Microbiology of Soils
The diagnostic enzyme for denitrification is

none of these
nitrate oxidase
nitrate reductase
nitro oxidoreductase

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