Question: Staphylococci typically occur in_________________?

• 1. Pairs
• 2. Chains
• 3. Tetrads
• 4. Irregular clusters

Question: In a patient with typhoid, diagnosis after 15 days of onset of fever is best done by_____________?

• 1. Blood culture
• 2. Widal test
• 3. Stool culture
• 4. Urine culture

Question: The virulence factors of Neisseria gonorrhea include all of the following except____________?

• 1. Outer membrane proteins
• 2. IgA Protease
• 3. M-Proteins
• 4. Pili

Question: The genetic ability of a bacterium to grow in the presence of several antibiotics is passed in vivo from one bacterium to another by_____________?

• 1. Conjugation
• 2. Rarefaction
• 3. Transduction
• 4. Transformation

Question: One of the following is a treponemal test for diagnosis of syphilis_____________?

• 1. FTAB
• 2. Widal test
• 3. Wasserman test
• 4. Kahn test

Question: For uniform staining reaction, morphology and biochemical activity it is advisable to study bacterial cultures during the_____________?

• 1. Lag phase
• 2. Death phase
• 3. Stationary phase
• 4. Logarithmic phase

Question: Organ of locomotion in bacteria is________________?

• 1. Fimbria
• 2. Flagella
• 3. Capsule
• 4. Cell wall

Question: Endotoxin have all but one of the properties given below_______________?

• 1. Produced by gram negative bacteria
• 2. Produced by gram positive bacteria
• 3. Not secreted outside the cell
• 4. Cannot be toxoided

Question: Toxic shock syndrome is due to the following virulence factor_____________?

• 1. M protein
• 2. Pyrogenic exotoxin
• 3. Streptolysin 0
• 4. Carbohydrate cell wall

Question: The commonest method of detection of diptheria carriers is_______________?

• 1. Schick test
• 2. Dick test
• 3. Casoni’s test
• 4. Charles’ test