Medical laboratory science
microbiology
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Quiz Questions & Answers
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Question 1: The test used most often to separate Staphylococcus and Micrococcus spp. from Streptococcus spp. is:
A. Bacitracin
B. Catalase
C. Hemolysis pattern
D. All of these options
Question 2: 4. Which of the following tests is used routinely to identify S. aureus?
A. Slide coagulase test
B. Tube coagulase test
C. Latex agglutination
D. All of these options
Question 3: Slime production is associated with which Staphylococcus species?
A. Staphylococcus aureus
B. Staphylococcus epidermidis
C. Staphylococcus intermedius
D. Staphylococcus saprophyticus
Question 4: S. saprophyticus is best differentiated from S. epidermidis by its resistance to:
A. 5 µg of lysostaphin
B. 5 µg of novobiocin
C. 10 units of penicillin
D. 0.04 unit of bacitracin
Question 5: A gram-positive coccus recovered from a wound ulcer from a 31-year-old patient with diabetes showed pale yellow, creamy, β-hemolytic colonies on blood agar. Given the following test results, what is the most likely identification? Catalase = + Glucose OF: Positive open tube, negative sealed tube Mannitol salt = Neg Slide coagulase = Neg
A. Staphylococcus aureus
B. Staphylococcus epidermidis
C. Micrococcus spp.
D. Streptococcus spp.