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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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Is B subtilis gamma 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.
Is P aeruginosa gelatinase positive or negative?
Positive
Will p. aeruginosa grow on a blood agar media?
no
Is Streptococcus pyogenes always Beta hemolytic?
Almost always - stress on 'almost'. There are sporadic cases of nonhemolytic or alpha hemolytic S. pyogenes. So beta hemolysis is usable for quick screens, but is not 100% percent reliable.
What is the difference between A. faecalis and P. aeruginosa?
P. aeruginosa is positive for nitrate reduction where as A. faecalis is negative.
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
Is B subtilis gamma 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.
Is P aeruginosa gelatinase positive or negative?
Positive
Will p. aeruginosa grow on a blood agar media?
no
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.
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
What is the antihypertensive drug causes hemolytic anemia?
among many drugs causing hemolytic anemia one is Alpha methyl dopa a centrally acting antihypertensive used most in pregnant womens to control blood pressure.
Is Streptococcus pyogenes always Beta hemolytic?
Almost always - stress on 'almost'. There are sporadic cases of nonhemolytic or alpha hemolytic S. pyogenes. So beta hemolysis is usable for quick screens, but is not 100% percent reliable.
