Spirochacter and Enterobacteriaceac – Section 1

1. 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

Correct Answer: C. Both (a) and (b)

2. 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

Correct Answer: C. S Typhimurium

3. Which of the following media is selective for Salmonella?

A. Thiosulphate citrate bile salt agar
B. Wilson and Blair’s brilliant-green bismuth sulfite agar medium
C. Bile salt agar
D. All of the above

Correct Answer: B. Wilson and Blair’s brilliant-green bismuth sulfite agar medium

4. 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 a high salt concentration
D. it is less inhibitory to S. Dysentriae and S. flexneri

Correct Answer: D. it is less inhibitory to S. Dysentriae and S. flexneri

5. 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

Correct Answer: B. They are oxidase-negative

Leave A Comment?

5 × 4 =