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Microbiology of Soils

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

Hydrolytic
methanogenic
All of these
Transitional

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

all of these
Streptomyces
Micromonospora
Nocardia

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Microbiology of Soils
The diagnostic enzyme for denitrification is

nitrate reductase
none of these
nitrate oxidase
nitro oxidoreductase

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Microbiology of Soils
The diagnostic enzyme for nitrogen-fixing organisms is

nitrogenase
nitrate reductase
none of these
nitrate oxidase

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Microbiology of Soils
Which are the main source of biofertilisers?

Streptococcus
None of these
Bacillus
Cyanobacteria

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Microbiology of Soils
Which of the following microorganism use H2S as the electron donor to reduce carbon dioxide?

Chromaticum
Rhodomicrobium
Chlorobium
Both (a) and (b)

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