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  • Question
  • Streptococcus pyogenes can be differentiated from other haemolytic Streptococci on the basis of


  • Options
  • A. Bacitracin sensitivity
  • B. Erythromycin sensitivity
  • C. Aminoglycosides sensitivity
  • D. Penicillin sensitivity

  • Correct Answer
  • Bacitracin sensitivity 


  • Streptococcus problems


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    • 1. Which of the following test indicates the susceptibility to streptococcal pyrogenic exotoxin?

    • Options
    • A. Schick test
    • B. Disk test
    • C. ASO test
    • D. Precipitation test
    • Discuss
    • 2. The bacteria involved in the production of dental caries is/are

    • Options
    • A. Streptococcus mutans
    • B. S sanguis
    • C. Both (a) and (b)
    • D. Streptococcus pyogenes
    • Discuss
    • 3. Which of the following test(s) may establish retrospective diagnosis of streptococcal infection?

    • Options
    • A. Anti-DNase B test
    • B. ASO test
    • C. Streptozyme test
    • D. All of these
    • Discuss
    • 4. Which of the following condition is non-suppurative sequelae of Streptococcus pyogenes infections?

    • Options
    • A. Acute rheumatic fever
    • B. Acute glomerulonephritis
    • C. Erythema nodosum
    • D. All of these
    • Discuss
    • 5. Cell wall protein of Streptococcus pyogenes crossreacts with human

    • Options
    • A. synovial fluid
    • B. cardiac valves
    • C. myocardium
    • D. vascular intima
    • Discuss
    • 6. Crystal violet blood agar is a selective medium for

    • Options
    • A. ?-haemolytic streptococci
    • B. Staphylococcus aureus
    • C. Corynebacterium diphtheriae
    • D. Mycobacterium tuberculosis
    • Discuss
    • 7. Reddening of meat in cooked meat broth is produced by

    • Options
    • A. C tetani
    • B. C histolyticum
    • C. Clostridium perfringens
    • D. C sporogenes
    • Discuss
    • 8. Typical drumstick appearance of bacilli is generally seen in

    • Options
    • A. C perfringens
    • B. C botulinum
    • C. C tetani
    • D. C histolyticum
    • Discuss
    • 9. Which of the following properties are the characteristics of tetanospasmin?

    • Options
    • A. It is a heat-labile protein
    • B. It is a neurotoxin
    • C. It can be toxoided
    • D. All of these
    • Discuss
    • 10. Which of the following is predominantly proteolytic?

    • Options
    • A. C. sporogenes
    • B. C. histolyticum
    • C. Both (a) and (b)
    • D. C. speticum
    • Discuss


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