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Well, for a few reasons. Mycobacterium undergo something called the Stringent Response. This is how the organism adapts to and survives dehydration and periods of nutrient deprivation.
The cell wall also play a big part. Mycobacterium are gram-positve, which means that 90% of their cell wall is composed of fatty acids such as peptidoglycans and mycolic acids. Mycolic acids also play a large part in making the organisms so resilient.
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Why are microbial forms are the most resistant to disinfectants?
ssa
How can you differentiate the pigment of p aeruginosa on pseudomonas agar P from the pigment of E coli on MacConkey agar without referring to the colors?
It's not easy to differentiate the pigment of p aeruginosa on pseudomonas agar P from the pigment of E. coli on MacConkey agar without referring to the colors, but it can be done based on the structure of the p aeruginosa.
What is the reaction of pseudomonas aeruginosa bacteria in zinc sulfate?
Pseudomonas aeruginosa bacteria can utilize zinc sulfate as a zinc source for growth and metabolism. Zinc is an essential micronutrient for bacterial cells, and its presence can influence various cellular processes in P. aeruginosa. However, the specific reaction or response of P. aeruginosa to zinc sulfate can vary depending on the concentration of zinc and the environmental conditions.
What is the optimal pH range of Pseudomonas aeruginosa?
The optimal pH range for Pseudomonas aeruginosa is around 6.6-7.4. However, P. aeruginosa is known for its ability to adapt and survive in a wide range of acidic and alkaline environments.
Is P aeruginosa gelatinase positive or negative?
Pseudomonas aeruginosa is gelatinase positive, meaning it can break down gelatin. Gelatinase is an enzyme that allows the bacterium to degrade gelatin, a protein derived from collagen.
Why are microbial forms are the most resistant to disinfectants?
ssa
How can you differentiate the pigment of p aeruginosa on pseudomonas agar P from the pigment of E coli on MacConkey agar without referring to the colors?
It's not easy to differentiate the pigment of p aeruginosa on pseudomonas agar P from the pigment of E. coli on MacConkey agar without referring to the colors, but it can be done based on the structure of the p aeruginosa.
What is the scientific name for Pseudomonas aeruginosa?
The scientific name for Pseudomonas aeruginosa is Pseudomonas aeruginosa. It is a gram-negative bacterium commonly found in water, soil, and sometimes on the skin. P. aeruginosa is known for being a leading cause of healthcare-associated infections.
Which microbial forms are most resistant to disinfectants?
Spores, such as those produced by Clostridium and Bacillus species, are the most resistant microbial forms to disinfectants. Spores have a protective outer layer that makes them highly resistant to harsh environmental conditions, including disinfection processes.
What is the difference between A. faecalis and P. aeruginosa?
Enterococcus faecalis is a Gram-positive bacterium commonly found in the intestines of humans and animals, while Pseudomonas aeruginosa is a Gram-negative bacterium often found in soil and water. P. aeruginosa is known for its ability to cause infections in immunocompromised individuals, while A. faecalis is typically less pathogenic but can cause infections in certain settings.
What is the reaction of pseudomonas aeruginosa bacteria in zinc sulfate?
Pseudomonas aeruginosa bacteria can utilize zinc sulfate as a zinc source for growth and metabolism. Zinc is an essential micronutrient for bacterial cells, and its presence can influence various cellular processes in P. aeruginosa. However, the specific reaction or response of P. aeruginosa to zinc sulfate can vary depending on the concentration of zinc and the environmental conditions.
What is the optimal pH range of Pseudomonas aeruginosa?
The optimal pH range for Pseudomonas aeruginosa is around 6.6-7.4. However, P. aeruginosa is known for its ability to adapt and survive in a wide range of acidic and alkaline environments.
Is P aeruginosa gelatinase positive or negative?
Pseudomonas aeruginosa is gelatinase positive, meaning it can break down gelatin. Gelatinase is an enzyme that allows the bacterium to degrade gelatin, a protein derived from collagen.
Endospore-formers?
resting or dormant type of cell that is highly resistant to environmental extremes (heat, dessication, oxygen, radiation, disinfectants).
Does pseudomas aeruginosa produce gas?
Yes, Pseudomonas aeruginosa can produce gas through fermentation of certain substrates, such as glucose. This gas production can be detected in biochemical tests or through gas-liquid chromatography. Gas formation by P. aeruginosa can be an important factor in clinical settings, particularly in catheter-associated infections.
How did paul ehrlich know that only alkaline disinfectants are effective against mycobacterium?
Paul Ehrlich discovered that only alkaline disinfectants are effective against Mycobacterium through his experiments on different chemical agents and their effects on bacteria. He found that Mycobacterium has a unique cell wall structure that is resistant to many disinfectants but susceptible to alkaline solutions. This led to the discovery of the effectiveness of alkaline disinfectants against Mycobacterium.
Is p areuginosa gram positive?
No, Pseudomonas aeruginosa is a gram-negative bacterium.
