Exam 2: UAMS Microbiology (Latest 2026/2027 Update) Questions with Verified Answers | 100% Correct| Graded A.

Exam 2: UAMS Microbiology (Latest
2026/2027 Update) Questions with Verified
Answers | 100% Correct| Graded A.
Question:

Which organism is typically MUG positive and what does a positive
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reaction look like?? i,- i,-




Answer:

E. coli (not E. coli 0157); fluorescence
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Question:

Which organisms produce lactose positive colonies on MAC and what is
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the expected appearance of the organisms??
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Answer:
E. coli, Klebsiella & Enterobacter are lactose + & produce red/pink colonies
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Question:

Which organism causes most urinary tract infections??
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Answer:
E. coli
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,Question:

Voges-Proskauer = Pink; Phenylalanine = No color change i,- i,- i,- i,- i,- i,- i,-




KIA = A/A; Citrate = Blue
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Lysine = Purple (Control tube - yellow)
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Indole = No color change; ONPG = Yellow
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Urea = Pink; Motility = Positive
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DNAse = No clearing i,- i,- i,-




What is the identification??
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Answer:
Enterobacter species i,-




Question:
Voges-Proskauer = No color change i,- i,- i,- i,-




Phenylalanine = No color change i,- i,- i,- i,-




Kligler iron agar = Yellow/yellow; Citrate = Green
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Lysine = Purple (Control tube - yellow); Indole = Red
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ONPG = Yellow; Urea = Yellow; Motility = Positive
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What is the identification??
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Answer:

Escherichia coli i,-

,Question:

Which of the Haemphilus species are NOT normal flora??
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Answer:

H. ducreyi & H. aegyptius
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Question:

Which two Haemophilus species require X and V factors for growth??
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Answer:
H. haemolyticus (hemolytic) & H. influenzae (nonhemolytic)
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Question:
Which two Haemophilus species require V factor for growth??
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Answer:

H. parahinfluenzae (nonhemolytic) & H. parahaemolyticus (hemolytic)
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Question:

Which two Haemophilus species are porphyrin test positive
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(fluorescence)??
Answer:

, H. parainfluenzae (no hemolysis present) & H. parahaemolyticus
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(hemolysis)




Question:
Which organism causes pinkeye??
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Answer:

Haemophilus aegyptius i,-




Question:
Which organism is transmitted sexually and causes a chancroid or soft
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chancre??

Answer:

Haemophilus ducreyi i,-




Question:
Which gram negative bacilli satellite around staphylococci on sheep blood
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agar? What nutrient is supplied by the staphylococci??
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Answer:

Haemophilus; V factor (NAD) i,- i,- i,-