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

• 1. Resistance transfer factor (RTF)
• 2. Colicigenic factor (Col)
• 3. Fertility factor (F+)
• 4. All of the above

Question: All are not true for cultivation of anaerobic organisms except_______________?

• 1. Incubator
• 2. anaerobic jar
• 3. Refrigerator
• 4. Centrifuge

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

• 1. Disinfectant
• 2. Moist heat sterilisation
• 3. Antibiotics
• 4. Dry heat sterilization

Question: Sterilisation is______________?

• 1. Pathogens killed but spores are not affected
• 2. Only pathogenic micro-organisms killed
• 3. Non-pathogenic killed
• 4. All pathogenic and non-pathogenic microorganisms killed

Question: compared with autoclave, use of a dry heat over for sterilization has the following disadvantages______________?

• 1. Time-consuming
• 2. Less effective
• 3. Causes instruments to rust
• 4. Causes sharp instruments to dull

Question: Which of the following is not a feature of anaphylaxis ?

• 1. Delayed reaction
• 2. Immediate reaction
• 3. passive transfer by serum
• 4. None of the above

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