Nitrogen fixation, its types and mechanism
What is nitrogen fixation? The phenomenon of conversion of free nitrogen into nitrogenous salts to make it available for absorption by plants is called nitrogen […]
What is nitrogen fixation? The phenomenon of conversion of free nitrogen into nitrogenous salts to make it available for absorption by plants is called nitrogen […]
The genus Streptococcus includes a large number of species of Gram-positive, catalase negative cocci. They are non-motile and non-spore forming. They are arranged in chains […]
Spore is a resting or dormant cell which is metabolically inactive and is produced during unfavorable conditions like nutrition deficiency, extreme temperature and pH, presence […]
What is a biofilm? A biofilm is an aggregate of interactive bacteria attached to a solid surface or to each other and encased in an […]
Capsule staining is a differential technique commonly used in light microscopy. A capsule is a gelatinous layer which lies immediately exterior to the cell wall […]
Acid-fast staining is one of the differential staining techniques commonly used for light microscopic examination of bacteria. It differentiates acid-fast bacteria from non-acid fast bacteria. […]
Gram staining is a differential staining technique that is used for microscopic examination of bacteria. In differential staining, specimen is subjected to a series of […]
Purpose of staining: In bright field or light microscopy, background appears bright and the microorganisms appear dark as they absorb some of the light. However, […]
The term “normal microbial flora” denotes the population of microorganisms that inhabit various body parts like skin and mucous membranes of healthy normal persons. Our […]
Pathogens that enter into bodies of water arrive there via intestinal discharges of humans or other animals. Furthermore, certain bacterial species, particularly Esherichia coli and […]
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