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WorksheetsBACTE - MQ1B
Total questions: 20
Worksheet time: 7mins
Which result is consistent with VRSA?
MIC of 10 mg/mL
MIC of 8 mg/mL
MIC of 20 mg/mL
16 mm/mL
Which discrepancy should be resolved by the D-zone test?
Erythromycin resistant, clindamycin susceptible
Erythromycin susceptible, clindamycin resistant
Both erythromycin and clindamycin are susceptible
Both erythromycin and clindamycin are resistant
Which of the following mediates resistance to clindamycin?
mecA gene
SCCmec cassette
erm gene
msrA pump
Which of the these organisms will not cause false positive results in immunoassays?
S. saprophyticus
S. hominis
S. haemolyticus
S. epidermidis
After a negative result has been obtained in an immunoassay, which should be the next step?
Report the negative result
Repeat the test the second time, if consistent, report
Rerun with a different kit
Confirm with a tube coagulase test
Which is not true of Micrococcus luteus?
Microdase test positive
Taxo A resistant
FX susceptible
Lysostaphin negative
Which organisms is not VP test positive?
S. aureus
S. intermedius
S. lugdunensis
S. haemolyticus
S. schleiferi
Which organisms is PYR negative?
S. aureus
S. intermedius
S. lugdunensis
S. haemolyticus
S. schleiferi
Which temperature would enhance fibrinolysin activity?
4C
20C
37C
100C
Which of the following detects the clumping factor?
A: slide coagulase test
B: immunoassays
C: tube coagulase test
Both A and B
Both B and C
What is a positive result for a tube coagulase test?
agglutination after 30 seconds
clot formation after 4 hours
bubbles within 10 seconds
bright red precipitate
What is a positive result for detecting cell bound coagulase mixed with plasma?
agglutination after 30 seconds
clot formation after 4 hours
bubbles within 10 seconds
bright red precipitate
Which of the following is an indicator for detecting acid production in MSA?
neutral red
phenol red
bromthymol blue
yellow
Which of the following is not a component of MSA?
mannitol
phenol red
4% NaCl
8% NaCl
Yellow colonies in MSA
S. epidermidis
SCV
S. aureus
S. saphrophyticus
UTI in young, sexually active females
S. epidermidis
SCV
S. aureus
S. saphrophyticus
Blood culture contaminant
S. epidermidis
SCV
S. aureus
S. saphrophyticus
Fastidious, small, pinpoint, nonhemolytic, and nonpigmented colonies on blood agar.
S. epidermidis
SCV
S. aureus
S. saphrophyticus
toxins associated in tampoon wearing women
exotoxin TSST-1
enterotoxins A–E
exfoliative toxins
PVL
Cytolytic to erythrocytes and demonstrates nonspecific membrane toxicity to other mammalian cells.
alpha toxin
beta toxin
delta toxin
gamma toxin
