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Microbiology of Soils

Microbiology of Soils
Denitrification may be distinguished as

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

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Microbiology of Soils
Which of the following soil microorganism is involved in the reduction of sulfates to H2S?

Rhodospirillum
Rhodomicrobium
Desulfotomaculum
Thiobacillus thiooxidans

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Microbiology of Soils
Denitrification is carried out

usually by facultative anaerobes
predominantly by Pseudomonas spp
All of these
predominantly by Bacillus spp

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Microbiology of Soils
The diagnostic enzyme for denitrification is

nitrate oxidase
none of these
nitro oxidoreductase
nitrate reductase

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Microbiology of Soils
The microbial ecosystem of soil includes

None of these
biotic components of soil
biotic and abiotic components of soil
abiotic components of soil

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

nitrogenase
nitrate reductase
nitrate oxidase
none of these

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