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Microbiology of Soils

Microbiology of Soils
The diagnostic enzyme for denitrification is

none of these
nitro oxidoreductase
nitrate reductase
nitrate oxidase

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

Hydrolytic
methanogenic
Transitional
All of these

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Microbiology of Soils
Which of the following is capable of oxidizing sulfur to sulfates?

Thiobacillus thiooxidans
Rhodospirillum
Rhodomicrobium
Desulfotomaculum

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Microbiology of Soils
Assimilative denitrification is done by

prokaryotes
all of these
plants
fungi

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Microbiology of Soils
The crops which are involved in nitrogen fixation are

bean and lupine
alfalfa and clover
soybean
all of these

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

generally greater than
generally smaller than
equal to
none of these

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