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AAB MT MICROBIOLOGY EXAM WITH COMPLETE QUESTIONS AND ACCURATE ANSWERS
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AAB MT MICROBIOLOGY WITH COMPLETE QUESTIONS AND ACCURATE ANSWERS
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AAB MT MICROBIOLOGY WITH COMPLETEQUESTIONS AND ACCURATE ANSWERS
What best describes Thayer-Martin media? Correct Answer
Enriched chocolate agar
What differentiates Thayer-Martin medium from modified Thayer-
Martin medium? Correct Answer Trimethoprim lactate
What is the medium of choice for culturing gonococci and
meningococci? Correct Answer Modified Thayer-Martin media
When performing the oxidase test, which of the following
techniques CANNOT be used? Correct Answer Use a nichrome
loop to transfer the colony to the filter paper.
What color is a positive oxidase test? Correct Answer Purple
All of the following genera are oxidase-positive except which one?
Correct Answer Haemophilus
Neisseria meningitidis degrades which of the following sugars?
Correct Answer Glucose and maltose
Why should beta-lactamase tests be performed with growth from
primary isolation media? Correct Answer Plasmid coding for the
enzyme may be lost on subculturing.
NOT a method for testing for the production of beta-lactamase?
Correct Answer Saccharogenic method
,Methods of testing for the production of beta-lactamase? Correct
Answer Chromogenic cephalosporin method, acidometric
method, and idiometric method.
What indicates a positive reaction for the beta-lactamase
chromogenic cephalosporin method? Correct Answer Color
change
Which of the following tests can give a presumptive identification
of Moraxella catarrhalis if the isolate is a Gram-negative
diplococci that is oxidase positive and isolated from a body fluid
from the middle ear? Correct Answer Beta-lactamase test
What is the morphology of C. diphtheriae Correct Answer Gram-
positive, non-motile rods
The terms "picket fence" and "Chinese letters" describe the
common arrangement of cells for which organism? Correct
Answer Corynebacterium
Babes-Ernst granules are characteristic of which organism?
Correct Answer Corynebacterium diphtheriae
What is the purpose of potassium tellurite in tellurite medium?
Correct Answer Inhibits normal flora
Potassium tellurite medium produces what color colonies of C.
diphtheriae Correct Answer Gray-black
When culturing C. diphtheriae, which of the following media will
enhance pleomorphism and granule production? Correct Answer
Loeffler serum agar
The Elek test is for the detection of which toxin? Correct Answer
C. diphtheriae toxin
, Which of the following diphtheroids is normal flora in the throat?
Correct Answer Corynebacterium pseudodiphtheriticum
How long does the morphological cycle of Rhodococcus equi from
coccoid to rod form take? Correct Answer 24 hours
Which of the following is a Gram-positive to Gram-variable
coccobacillus? Correct Answer Listeria monocytogenes
Refrigeration of the specimen for several months may enhance
isolation of which organism? Correct Answer Listeria
monocytogenes
Listeria monocytogenes produces a positive in which one of the
following biochemical tests? Correct Answer Catalase
Listeria monocytogenes is negative for these biochemical tests?
Correct Answer Coagulase, beta-lactamase, and the lactose
fermentation test.
Which of the following will differentiate Listeria monocytogenes
from Corynebacteria species? Correct Answer Nonmotile and
salicin negative
Spore-forming cells in bamboo pole arrangement are
characteristic of which organism? Correct Answer Bacillus
anthracis
Which aerobic, Gram-positive, sporulating rod can cause food
poisoning? Correct Answer Bacillus cereus
Which one of the following will stain acid-fast bacilli? Correct
Answer Kinyoun stain
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