Spirochacter and Enterobacteriaceac problems
- 1. Bipolar staining is characteristic of
Options- A. Yersinia pestis
- B. Proteus mirabilis
- C. Pseudomonas aeruginosa
- D. all of these Discuss
Correct Answer: Yersinia pestis
- 2. Salmonellae can also be killed by
Options- A. pasteurisation
- B. chlorination
- C. boiling
- D. all of these Discuss
Correct Answer: all of these
- 3. Which of the following property(ies), shown by the organisms belong(s) to the family Enterobacteriaceae?
Options- A. They are catalase-positive
- B. They are oxidase-negative
- C. They ferment glucose
- D. All of these Discuss
Correct Answer: All of these
- 4. Yersinia enterocolitica and Y. pestis can be differentiated on the basis of which of the following tests?
Options- A. Decarboxylation of ornithine
- B. Fermentation of sucrose and cellobiose
- C. Motility at 22°C
- D. All of these Discuss
Correct Answer: All of these
- 5. Which of the following(s) bacteria belong to the family Entero-bacteriaceae?
Options- A. Yersinia
- B. Shigella
- C. Salmonella
- D. All of these Discuss
Correct Answer: All of these
- 6. Xylose lysine deoxycholate (XLD) agar is better selective medium than the deoxycholate citrate agar (DCA) because
Options- 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 Discuss
Correct Answer: it is less inhibitory to S. Dysentriae and S. flexneri
- 7. Which of the following property(ies) is/are seen in the members of family Enterobacteriaceae?
Options- A. They are catalase-positive
- B. They are oxidase-negative
- C. They ferment glucose
- D. They reduce nitrates to nitrites Discuss
Correct Answer: They are oxidase-negative
- 8. Selective media for the isolation of Shigella is
Options- A. Hektoen enteric agar
- B. Salmonella-Shigella agar
- C. Xylose lysine deoxycholate agar
- D. All of these Discuss
Correct Answer: All of these
- 9. Sylvatic plague occurs in
Options- A. mice
- B. squirrels
- C. chipmunks
- D. all of these Discuss
Correct Answer: all of these
- 10. Species of Shigella which is predominant in India is
Options- A. S sonnei
- B. S dysenteriae
- C. S boydii
- D. S flexneri Discuss
Correct Answer: S flexneri
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