UAMS Microbiology Exam 1 || Most Recent
Exam 2026-2027 Actual Complete Real Exam
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A nasal swab was inoculated to a mannitol salt agar. The
examination shows
colonies on yellow agar. The organism is: -
ANSWER -S. aureus
Pink colonies would be coag- staph
A beta strep gives the following reactions:
CAMP -positive
Bacitracin - S
Which should be done next:
A. Report as Group A Strep
B. Report as Group B Strep
C. Report as Beta Strep not Group A or B
D. Perform Lancefield serogrouping test - ANSWER -D. Perform
Lancefield serogrouping test
An alpha strep gives the following reactions:
Bile-esculin - Black
Optochin - Grows up
,to disc What should
be done next?
A. Report as Enterococcus
B. Report as nonenterococcal Group D Strep
C. Peform a 6.5% salt tolerance test
D. Perform Lancefield serogrouping - ANSWER -C. Perform
6.5% salt tolerance
This differentiates between Group D and Enterococcus
A specimen labeled "pharangeal pseudomembrane" was
received. This should be innoculated on:
A. Loeffler, cystine-tellurite and Tinsdale
B. BAP, Choc, Mac
C. BAP, PEA, mannitol salt agars
D. BAP, Loeffler and cystine-tullurite agars - ANSWER -D. BAP,
Loeffler and cystine-tullurite agars
This looks for Corynebacterium diphtheriae.
An infant's
CSF culture
had:
Beta
Growth on
Choc
Blue-purple
coccobacilli
, Cat +
A. Perform modified
acid-fast stain and
lysozyme resistance
B. CAMP test and
growth on PEA
agar
C. H2S
production and
motility
D. Bile-esculin and
Motility - ANSWER -D.
Bile-esculin and
Motility
Ornithine Decarboxylase - ANSWER -Used to presumptively ID
S. lugdunensis.
Must use mineral oil to create anaerobic
conditions.
Negative =
yellow
Positive = purple = S.
lugdunensis.
CHROMagar for MRSA - ANSWER -Pink colonies = MRSA
Micrococcus species - ANSWER -GPC - tetrads
Lemon-yellow colonies
Gamma hemolytic
Exam 2026-2027 Actual Complete Real Exam
Questions And Correct Answers (Verified
Answers) Already Graded A+ | Guaranteed
Success!! Newest Exam | Just Released!!
A nasal swab was inoculated to a mannitol salt agar. The
examination shows
colonies on yellow agar. The organism is: -
ANSWER -S. aureus
Pink colonies would be coag- staph
A beta strep gives the following reactions:
CAMP -positive
Bacitracin - S
Which should be done next:
A. Report as Group A Strep
B. Report as Group B Strep
C. Report as Beta Strep not Group A or B
D. Perform Lancefield serogrouping test - ANSWER -D. Perform
Lancefield serogrouping test
An alpha strep gives the following reactions:
Bile-esculin - Black
Optochin - Grows up
,to disc What should
be done next?
A. Report as Enterococcus
B. Report as nonenterococcal Group D Strep
C. Peform a 6.5% salt tolerance test
D. Perform Lancefield serogrouping - ANSWER -C. Perform
6.5% salt tolerance
This differentiates between Group D and Enterococcus
A specimen labeled "pharangeal pseudomembrane" was
received. This should be innoculated on:
A. Loeffler, cystine-tellurite and Tinsdale
B. BAP, Choc, Mac
C. BAP, PEA, mannitol salt agars
D. BAP, Loeffler and cystine-tullurite agars - ANSWER -D. BAP,
Loeffler and cystine-tullurite agars
This looks for Corynebacterium diphtheriae.
An infant's
CSF culture
had:
Beta
Growth on
Choc
Blue-purple
coccobacilli
, Cat +
A. Perform modified
acid-fast stain and
lysozyme resistance
B. CAMP test and
growth on PEA
agar
C. H2S
production and
motility
D. Bile-esculin and
Motility - ANSWER -D.
Bile-esculin and
Motility
Ornithine Decarboxylase - ANSWER -Used to presumptively ID
S. lugdunensis.
Must use mineral oil to create anaerobic
conditions.
Negative =
yellow
Positive = purple = S.
lugdunensis.
CHROMagar for MRSA - ANSWER -Pink colonies = MRSA
Micrococcus species - ANSWER -GPC - tetrads
Lemon-yellow colonies
Gamma hemolytic
