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P. aeruginosa is not alpha hemolytic. Hemolysis is used mainly for the identification of Streptococci and can be used for Staphylococci. P. aeruginosa can be mistaken for being alpha hemolytic because it produces a green diffusable pigment. This pigment is especially visible if grown in media with little to no pH dye indicators such as SIM tubes, nutrient broths (undisturbed), API strips, etc.
A good way to tell the difference between diffusable pigment production and hemolysis is to look at the agar surrounding isolated colonies. Diffusable pigments should be alot more visible in areas with higher concentrations of bacteria (quadrant 1) and may not be seen around isolated colonies of 24 hour cultures. Hemolysis should be readily seen around isolated colonies regardless of incubation time.
If left long enough, P. aeruginosa will eventually clear all the RBC in the agar around the colonies (beta hemolysis).
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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 B subtilis gamma hemolytic?
No, Bacillus subtilis is not gamma hemolytic. It is known to be gamma-non-hemolytic, meaning it does not cause the breakdown of red blood cells and does not produce clear zones around colonies on blood agar plates.
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.
Can alpha-hemolytic streptococci cause infective endocarditis?
Alpha-hemolytic strep is one class of streptococcus bacteria that does cause infective carditis (IE). Viridans Streptococcus, a specific strain of Alpha-hemolytic streptococcus is a cause of IE.
Is b subtilis hemolytic?
gamma/alpha hemolysis
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.
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 B subtilis gamma hemolytic?
No, Bacillus subtilis is not gamma hemolytic. It is known to be gamma-non-hemolytic, meaning it does not cause the breakdown of red blood cells and does not produce clear zones around colonies on blood agar plates.
Mononucleosis and has a positive throat culture for group Alpha-hemolytic streptococcal infection The drug of choice for this patient is?
Erythromycin
What are 3 examples of bacteria their uses or harms and habitat and scientific names?
scientific names uses1. Streptococcus pyogenes beta hemolytic streptococci2. Streptococcus viridans alpha hemolytic streptococci3. Streptococcus pneumoniae pneumococci
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.
Is Streptococcus pyogenes always Beta hemolytic?
Yes, Streptococcus pyogenes is typically beta-hemolytic on blood agar plates. However, some strains may exhibit alpha-hemolysis or gamma-hemolysis under certain conditions.
