Question: Bacterial spores are destroyed by_______________?

• 1. Boiling at 100°C
• 2. Disinfection by hypochlorite solution
• 3. Autoclave
• 4. Pasteurisation

Question: The Ig found in exocrine secretions is_____________?

• 1. IgG
• 2. IgD
• 3. IgM
• 4. IgA

Question: 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________________?

• 1. Lysosomes
• 2. Proteolytic enzymes
• 3. Lymphotoxins
• 4. Vasoactive mediators

Question: Dark ground microscopy is useful to identify______________?

• 1. Mycoplasma
• 2. Chlamydiae
• 3. Rickettsiae
• 4. Spirochaetes

Question: The minimum time required for the sterilization of surgical instruments by moist heat at 134°C is__________________?

• 1. 3 minutes
• 2. 15 minutes
• 3. 30 minutes
• 4. 60 minutes

Question: The best sterilization method for a hand-piece is________________?

• 1. Ethylene oxide gas
• 2. dry heat
• 3. chemical vapour
• 4. All of the above

Question: Example of immune complex hyper-sensitivity reaction is______________?

• 1. Atopic allergy
• 2. Serum sickness
• 3. Transfusion reaction
• 4. Contact dermatitis

Question: The chemotactic factor is______________?

• 1. C2a
• 2. C3b
• 3. C4a
• 4. C5a

Question: Steam under pressure in used in ________ sterilization?

• 1. Pasteurization
• 2. Autoclave
• 3. Kochs sterilizer
• 4. hot air oven

Question: The predominant immunoglobulin in saliva is_______________?

• 1. IgA
• 2. IgD
• 3. IgE
• 4. IgG