An organism that appears red with a black center on XLD agar is lactose-_____ and H₂S-_____.
A) positive;positive
B) positive;negative
C) negative;positive
D) negative;negative
Correct Answer:
Verified
Q9: A green colony with a black center
Q10: Which of correct for the description "acid
Q11: On MacConkey agar,Serratia spp.would appear:
A)red.
B)colorless.
C)green.
D)yellow.
Q12: For the most part,all Enterobacteriaceae are positive
Q13: A patient bitten by a flea developed
Q15: Enterotoxigenic and enteroinvasive are terms often linked
Q16: The swarming gram-negative bacillus that can be
Q17: The major etiologic agent of urinary tract
Q18: E.coli would appear what color on HE
Q19: E.coli can produce a toxin similar to
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