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Microbiology of Soils

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 phenomenon of commensalism refers to a relationship between organisms in which

None of these
one species of a pair is more benefited
both the species of a pair benefit
one species of a pair benefits

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Microbiology of Soils
Nitrogen fixation refers to the direct conversion of atmospheric nitrogen gas into

glucose
ATP
nitrate
ammonia

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

Micromonospora
Streptomyces
Nocardia
all of these

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

All of these
Hydrolytic
Transitional
methanogenic

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Microbiology of Soils
The population of algae in soil is __________ that of either bacteria or fungi.

none of these
equal to
generally greater than
generally smaller than

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