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Home Microbiology Spirochacter and Enterobacteriaceac Comments

  • Question
  • 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

  • Correct Answer
  • They are oxidase-negative 


  • Spirochacter and Enterobacteriaceac problems


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    • 1. 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
    • 2. Which of the following(s) bacteria belong to the family Entero-bacteriaceae?

    • Options
    • A. Yersinia
    • B. Shigella
    • C. Salmonella
    • D. All of these
    • Discuss
    • 3. 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
    • 4. 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
    • 5. Salmonellae can also be killed by

    • Options
    • A. pasteurisation
    • B. chlorination
    • C. boiling
    • D. all of these
    • Discuss
    • 6. 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
    • 7. Sylvatic plague occurs in

    • Options
    • A. mice
    • B. squirrels
    • C. chipmunks
    • D. all of these
    • Discuss
    • 8. Species of Shigella which is predominant in India is

    • Options
    • A. S sonnei
    • B. S dysenteriae
    • C. S boydii
    • D. S flexneri
    • Discuss
    • 9. Example of the pathogenic bacteria is/are

    • Options
    • A. L biflexa
    • B. Lparva
    • C. Leptospira interrogans
    • D. All of these
    • Discuss
    • 10. Dysentery may be caused by

    • Options
    • A. enteropathogenic Escherichia coli
    • B. enteroinvasive E. coli
    • C. enterotoxigenic E. coli
    • D. verotoxigenic E. coli
    • Discuss


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