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Submitted By :Ali Uppal


Endotoxins differ from exotoxins in that endotoxins______________?

  • (A)  are proteins
  • (B)  are heat labile
  • (C)  are highly antigenic
  • (D)  activate complement by the alternate pathway
Submitted By :Ali Uppal


Rideal Walker test is used to determine the efficiency of the_____________?

  • (A)  Disinfectant
  • (B)  Moist heat sterilisation
  • (C)  Antibiotics
  • (D)  Dry heat sterilization
Submitted By :Ali Uppal


All are not true for cultivation of anaerobic organisms except_______________?

  • (A)  Incubator
  • (B)  anaerobic jar
  • (C)  Refrigerator
  • (D)  Centrifuge
Submitted By :Ali Uppal


Multiple drug resistance of bacteria depends on which of the following_______________?

  • (A)  Resistance transfer factor (RTF)
  • (B)  Colicigenic factor (Col)
  • (C)  Fertility factor (F+)
  • (D)  All of the above
Submitted By :Ali Uppal


The major antiseptic value of soap lies in its ability to_____________?

  • (A)  Kill mircobes
  • (B)  Remove microbes
  • (C)  Inhibit microbial growth
  • (D)  Dehydrate microbial cells
Submitted By :Ali Uppal


Which of the following antibacterial substance is present in eggs and saliva ?

  • (A)  Lysozyme
  • (B)  Secretozyme
  • (C)  Albumin
  • (D)  Isozyme
Submitted By :Ali Uppal


Most antibodies are produced in the________________?

  • (A)  Heart and the liver
  • (B)  Brain and the meninges
  • (C)  Thymus and the appendix
  • (D)  Spleen and the lymph nodes
Submitted By :Ali Uppal


The optimal time and temperature required for sterilization in an autoclave is___________________?

  • (A)  140°C x 2 hrs. x 10 lbs pr.
  • (B)  121°F x 15 mts. x 15 lbs pr.
  • (C)  121°F x 15 sec. x 15 lbs pr.
  • (D)  121°C 15 mts. x 15 lbs pr.
Submitted By :Ali Uppal


Submitted By :Ali Uppal