Exercise: Spirochacter And Enterobacteriaceac

Questions for: Spirochacter And Enterobacteriaceac

Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?
A:
They are catalase-positive
B:
They are oxidase-negative
C:
They ferment glucose
D:
They reduce nitrates to nitrites
Answer: B
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Xylose lysine deoxycholate (XLD) agar is better selective medium than the deoxycholate citrate agar (DCA) because
A:
it is selective
B:
it imparts better growth
C:
it contains high salt concentration
D:
it is less inhibitory to S. Dysentriae and S. flexneri
Answer: D
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Which of the following media is selective for Salmonella?
A:
Thiosulphate citrate bile salt agar
B:
Wilson and Blair's brilliant-green bismuth sulphite agar medium
C:
Bile salt agar
D:
All of the above
Answer: B
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Which of the following is the commonest species of Salmonella for causing zoonotic disease?
A:
S Indiana
B:
S newport
C:
S typhimurium
D:
S enteritidis
Answer: C
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Which of the following serotypes of Salmonella does not produce H2S?
A:
S choleraesuis
B:
S paratyphi A
C:
Both (a) and (b)
D:
None of these
Answer: C
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