Antibiotics/Susceptibility
What is the course of action for Beta-Lactam antibiotics? (ex. Penicillin)
Inhibits cell wall synthesis
Lowenstein-Jenson agar is used to isolate....
Mycobacterium species
This organism causes UTI's in sexually active young women and is resistant to novobiocin.
S. saprophyticus
"Clue cells" are squamous epithelial cells covered in what bacteria?
Gardnerella vaginalis
What biochemical test is used to differentiate between P. vulgaris and P. mirabilis?
Indole
What is the standard concentration of McFarland for susceptibility testing?
0.5 McFarland
Thiosulfate Citrate-Bile Salts Agar (TCBS) is used to isolate....
Vibrio species
What Staph species causes scalded skin syndrome?
S. aureus
This organism has "umbrella-like" motility at room temperature but not at 37 degrees C.
Listeria monocytogenes
Bubonic plague is caused by what organism?
Yersinia pestis
What is the term used for the lowest concentration of a drug that prevents the growth of an organism?
MIC (minimum inhibitory concentration)
Thayer-Martin Agar is used to isolate...
N. gonorrhoeae and N. meningitidis
Which strep species is CAMP pos and hippurate hydrolysis pos?
S. agalactiae (GBS)
What is the purpose of 10% KOH for a wet prep?
What TSI reaction does Proteus produce?
K/A + H2S
What gene is detected for MRSA in molecular tests?
MecA gene
Bordet-Gengou agar is used to isolate...
Bordetella pertussis
Which strep species caused Rheumatic Fever?
S. pyogenes (GAS)
Which GPB has a palisade or "Chinese letter" arrangement on a gram stain?
Corynebacterium diphtheriae
What causes Klebsiella to be mucoid on media?
Capsule
What is the course of action for Aminoglycosides? (ex. Gentamycin)
Inhibits protein synthesis
Cycloserine-Cefoxitin Fructose agar (CCFA) is used to isolate...
C. difficile
What Staphylococcus species is PYR positive?
S. lugdunensis
Which organism causes food poisoning from fried rice?
Bacillus cereus
Shigella flexneri belongs to group A, B, C, or D?
Group B (Dirty Fingers Bring Shigella)
dysenteriae, flexneri, boydii, sonnei