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Microbiology of Soils

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

nitrate
ATP
ammonia
glucose

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Microbiology of Soils
The nitrogenase consists of

dinitrogenase reductase
none of these
both (a) and (b)
dinitrogenase

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Microbiology of Soils
Which are the main source of biofertilisers?

Streptococcus
Cyanobacteria
Bacillus
None of these

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Microbiology of Soils
Bacteria, as a group, are responsible for

sulfur oxidation
all of these
nitrogen fixation
nitrogen oxidation

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Microbiology of Soils
The diagnostic enzyme for denitrification is

nitro oxidoreductase
none of these
nitrate oxidase
nitrate reductase

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Microbiology of Soils
Which of the following is not the biofertilisers producing bacteria?

Anabaena
Clostridium
Nostoc
Both (a) and (b)

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