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
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.
Immunoglobulin implicated in atopy and anaphylaxis is_______________?
(A) IgE
(B) IgM
(C) IgG
(D) IgA
Synthesis of antibodies in plasma cells occurs in_________________?
(A) Golgi body
(B) Endoplasmic reticulum
(C) Nucleus
(D) Mitochondria
Which of the following is an enrichment medium________________?
(A) Blood agar
(B) Selenite F Broth
(C) Mac Conkey agar
(D) Nutrient Broth
Example of immune complex hyper-sensitivity reaction is______________?
(A) Atopic allergy
(B) Serum sickness
(C) Transfusion reaction
(D) Contact dermatitis
The best sterilization method for a hand-piece is________________?
(A) Ethylene oxide gas
(B) dry heat
(C) chemical vapour
(D) All of the above
The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is__________________?
(A) 3 minutes
(B) 15 minutes
(C) 30 minutes
(D) 60 minutes
Dark ground microscopy is useful to identify______________?
(A) Mycoplasma
(B) Chlamydiae
(C) Rickettsiae
(D) Spirochaetes
The interaction of antigens with antibodies on the surface of a mast cel leads to degranulation and anaphylaxis. The mast cell granules produce anaphylaxis because they contain________________?
(A) Lysosomes
(B) Proteolytic enzymes
(C) Lymphotoxins
(D) Vasoactive mediators