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MT (AAB) Microbiology | 200 Questions with 100% Correct Answers | Verified | Latest Update 2024
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MT (AAB) Microbiology | 200 Questions with 100% Correct Answers | Verified | Latest Update 2024
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MT (AAB) Microbiology | 200Questions with 100% Correct
Answers | Verified | Latest Update
2024
Which of the following should be used to remove antimicrobials before culturing?
- ✔✔antimicrobial removal device
Which statement concerning sodium polyanethol sulfonate (SPS) is NOT true? -
✔✔Activates some antimicrobials
What is the most abundant normal flora in throat cultures? - ✔✔alpha-
hemolytic streptococci
What is the most common pathogen in throat cultures? -
✔✔Streptococcus pyogenes
,Why is it recommended to stab blood agar plate when setting up throat cultures?
- ✔✔Some streptococci may not produce beta hemolysis under aerobic
conditions
Nasopharyngeal swabs are recommended for the detection of which carriers? -
✔✔H.influenzae, N.meningitidis, B. pertussis
Why is the first morning urine specimen preferred for urine cultures? -
✔✔Specimen is more concentrated
What indicates vaginal or urethral contamination of urine? - ✔✔> 10
squamous epi/hpf
How are smears of CSF prepared? - ✔✔centrifuged CSF sediment
Smears of CSF are usually stained with which stain? - ✔✔Gram stain
,Which of the following tests for bacterial antigen on cultures isolated from CSF is
more sensitive and faster? - ✔✔Latex agglutination tests
Which of the following is not the cause of a venereal disease? - ✔✔Haemophilus
aegyptius
A pos coagulase test is observed for which of the following? - ✔✔clotting
of plasma
What is the preferred method of differentiating S.aureus from S. epidermidis? -
✔✔Coagulase test
A colony of nonhemolytic, catalase positive,coagulase-negative, Gram-positive
cocci is most likely to be which organism? - ✔✔Staphylococcus epidermidis
, When performing a bacitracin differentiation test for Group A beta-hemolytic
streptococci, disks should be used that have how many units? - ✔✔0.02-0.04 unit
Hippurate hydrolysis is used to differentiate which organisms? - ✔✔group
A streptococci from gorup B streptococci
If pneumococci are resistant to penicillin, then they should be tested for which of
the following? - ✔✔beta-lactamase production
What is the most probable identity of a bile-esculin positive, beta-hemolytic
streptococci that grows 6.5% NaCl - ✔✔enterococci
The bile-esculin test is used to differentiate which two organisms? - ✔✔Group
D streptococci from enterococci
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