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16 Cards in this Set
- Front
- Back
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know how increased UV radiation affects the growth of bacteria
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disrupts the structure of DNA
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which 2 organisms did the enterotube identify when looking for enteric pathogens?
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Salmonella
Shigella |
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what makes MSA agar selective? Differential?
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Selective: for staphylococcus species
Differential: for the fermentation of mannitol |
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what is the purpose of isolating bacteria on blood agar?
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Allows differentiation of bacteria
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which organisms demonstrate Beta hemolysis?
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Streptococcus Pyogenes
Staphylococcus Aureus |
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gram reaction and morphology of Staph and Strep
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Staph Aureus
• Gram-positive • Morphology: medium to large, smooth, slightly raised, translucent, most colonies pigmented creamy yellow, most colonies beta-hemolytic Steph pyogenes • Gram-positive • Morphology: grayish white, transparent to translucent, matte or glossy, large zone of beta hemolysis |
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know diseases caused by Staphylococcus
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impetigom, cellulitis, abscess, boils, furuncle, food poisoning, toxic shock syndrome, septicemia
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know diseases caused by Steptococcus
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Pneumococcal
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which organism is sensitive to Bacitracin? To Optochin?
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Strep Pyogenes sensitive to Bacitracin.
Strep pneumoniae sensitive to Optochin |
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what rapid test is used to differentiate Staph from Strep?
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Catalase Test
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what rapid test is used to differentiate Staph aureus from Staph epidermidis?
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Coagulase Test
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what are 2 benefits of rapid diagnostic testing using an antigen antibody reaction?
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Visible Evidence
Faster Results |
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know which organisms may cause a urinary tract infection
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E coli
Enterobacter aerogenesm St epidermidis St aureus |
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what type of organisms grow on EMB?
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E. Coli
Enterobacter Salmonella |
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what type of organisms grow best on SAB?
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Penicillium Fungi
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is Blood agar a selective medium?
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differential
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