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Microbiology Mcqs

Tyndallisation is carried out for________________?

  • (A)  One day
  • (B)  Two successive days
  • (C)  60 minutes
  • (D)  Three successive days
Submitted By :Ali Uppal


Sunlight acts as sterilizing agent because_________________?

  • (A)  Long wavelength
  • (B)  short wave lenght
  • (C)  Ozone
  • (D)  Heat
Submitted By :Ali Uppal


Which of the following is not true of boiling water_____________?

  • (A)  It can kill hepatitis B virus
  • (B)  Used for sterilizing surgical instruments
  • (C)  Can kill mycobacterium tuberculosis
  • (D)  Can kill vegetative bacterial cells
Submitted By :Ali Uppal


In penicillin allergy, penicillin acts as a_______________?

  • (A)  Hapten
  • (B)  Carrier
  • (C)  Super antigen
  • (D)  Toxin
Submitted By :Ali Uppal


Which of the following is not a koch’s postulate ?

  • (A)  The bacteria should be able to be isolated from a diseased tissue
  • (B)  When inoculated in experimental animals bacteria may or may not cause disease
  • (C)  Pure cultures can be obtained
  • (D)  Bacteria should be able to be isolated from the diseased tissue in the experimental animals
Submitted By :Ali Uppal


Submitted By :Ali Uppal


Type of receptor present on T-cells are__________________?

  • (A)  Ig A
  • (B)  Ig G
  • (C)  Prostaglandins
  • (D)  CD4
Submitted By :Ali Uppal


Hot air oven cannot be used for sterlisling___________________?

  • (A)  Clothes
  • (B)  Instruments
  • (C)  Culture media
  • (D)  Needles
Submitted By :Ali Uppal


Zero growth rate is observed during one of the phase of the bacterial growth curve______________?

  • (A)  Lag
  • (B)  Exponential growth
  • (C)  Stationary phase
  • (D)  Decline
Submitted By :Ali Uppal


Exotoxins are____________________?

  • (A)  Lipid-polysaccharide complex
  • (B)  Protein compound
  • (C)  Lipoprotein
  • (D)  None
Submitted By :Ali Uppal