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Stenotrophomonas maltophilia is a multiple antibiotics resistant gram negative bacillus isolated from water and other environmental sources. It is an opportunistic pathogen with high morbidity and high mortality rate among hospitalised patients. It mostly causes diseases in hospitalised and immunocompromised ...
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Bacteria need the optimal condition for their growth. Bacteria grow best at optimum temperature, optimum pH and optimum redox reaction. Bacteria grow best at neutral pH. There are three types of classification on the basis of pH. Neutrophiles Acidophiles Basidophiles.
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Gram-negative bacteria have different cell wall than Gram positive bacteria. Because of the change in cell wall stricture, the bacteria are classified as gram positive bacteria and gram negative bacteria. Gram negative bacterial cell wall has some differences than the ...
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Bacterial growth refers to the increase in number of bacterial cells. Bacteria divide exponentially into the environment. Bacteria growth is represented in the form of generation time. Generation time is the time in which the bacterial cell divides into two. Bacterial ...
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The capsule is the structure that acts as an invisible cloak and helps the bacteria from phagocytosis. Characteristics of capsule: The characteristics of the capsule are as follows: This capsule can be found either on gram positive or gram negative bacteria. The ...
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These are the bacteria that can use sulfate to accept the electrons during anaerobic conditions. These are basically the anaerobic bacteria that reduce sulfate into hydrogen sulfide. Examples: Examples are purple sulfur bacteria and ...
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Bacteria grow in their optimal conditions. They need optimal temperature and pH to grow. When these conditions change, bacteria are unable to grow and divide. Bacteriostatic is the effect in which the bacterial growth stops while the bactericidal effect is ...
Continue readingPili bacteria are those bacteria that have the small hair-like appendages on the surface of bacteria. Characteristics of pili: The pili have the following characteristics: Pili are composed of pilin protein that is synthesized by the bacteria. Pili are responsible for the ...
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Filamentous bacteria are those bacteria that produce long mesh-like filament by growing end to end. These bacteria are seen as long strands under the microscope. These bacteria are present in sludge areas for better settling. They are also present in water ...
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Operon model was proposed by Francois Jacob and Jacques Monod. The operons are the genes that are coded for related protein. Operon consists of a regulator, promoter and the structural genes. Eukaryotic DNA has one operon for one gene that encodes ...
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