Microbiology of Soils Nitrifying bacteria can not be isolated directly by the usual techniques employed to isolate hetrotrophic bacteria. The reasons may be due to medium growth fast growth slow growth none of these medium growth fast growth slow growth none of these ANSWER DOWNLOAD EXAMIANS APP
Microbiology of Soils Nitrogen fixation by the microorganisms can be detected by adopting the approach of demonstrating growth in a nitrogen free medium cultivating the microorganisms in the presence of nitrogen labeled with isotropic nitrogen All of these measuring15N2 by mass spectrometer demonstrating growth in a nitrogen free medium cultivating the microorganisms in the presence of nitrogen labeled with isotropic nitrogen All of these measuring15N2 by mass spectrometer ANSWER DOWNLOAD EXAMIANS APP
Microbiology of Soils Which of the following species of different genera of bacteria are not capable of transforming nitrate to nitrogen? Alcaligenes Agrobacterium None of these Achromobacter Alcaligenes Agrobacterium None of these Achromobacter ANSWER DOWNLOAD EXAMIANS APP
Microbiology of Soils The transformation of nitrates to gaseous nitrogen is accomplished by microorganisms in a series of biochemical reactions. The process is known as denitrification nitrification nitrogen fixation ammonification denitrification nitrification nitrogen fixation ammonification ANSWER DOWNLOAD EXAMIANS APP
Microbiology of Soils An example of a symbiotic nitrogen fixer is Clostridium Beijerinckia Rhizobium Azotobacter Clostridium Beijerinckia Rhizobium Azotobacter ANSWER DOWNLOAD EXAMIANS APP
Microbiology of Soils Denitrification is carried out predominantly by Pseudomonas spp predominantly by Bacillus spp usually by facultative anaerobes All of these predominantly by Pseudomonas spp predominantly by Bacillus spp usually by facultative anaerobes All of these ANSWER DOWNLOAD EXAMIANS APP
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