Question: The single most important laboratory test for determining the virulence of staphylococci is___________?

• 1. Mannitol fermentation
• 2. Hemolysis of sheep erythrocytes
• 3. Detection of coagulase
• 4. The catalase test

Question: Which of the following characteristics of bacteria is not true?

• 1. Unicellular
• 2. Free living
• 3. Having either DNA or RNA
• 4. Cell wall containing muramic acid

Question: Salmonella typhi can be isolated at different times from______________?

• 1. Feaces
• 2. Blood
• 3. Urine
• 4. All of the above

Question: The temperature required for cultivating mycobacterium________________?

• 1. 2 degree
• 2. 0 degree
• 3. 27 degrees
• 4. 37 degrees

Question: Silver impregnation method of staining is useful to demonstrate_____________?

• 1. Bacterial flagella
• 2. Spirochetes
• 3. Both of the above
• 4. None of the above

Question: Gram -ve bacteria stain during gram staining____________?

• 1. Blue color
• 2. Red color
• 3. Green
• 4. Colorless

Question: The most common site where organisms are present in a typhoid carrier is______________?

• 1. Spleen
• 2. Gall Bladder
• 3. Liver
• 4. Salivary gland

Question: Diphtheria is pathogenic only when infected with______________?

• 1. Beta phage
• 2. Alfa phage
• 3. Lambda K12
• 4. Delta Phage

Question: Which of the following is an acid-fast bacillus_____________?

• 1. Mycobacterium bacilli
• 2. Treponema pallidum
• 3. Neisseria gonorrhea
• 4. All of the above

Question: Group A B-hemolytic streptococcal infection of the pharynx may be followed in some by_____________?

• 1. Diphtheria
• 2. Typhoid fever
• 3. Rheumatic fever
• 4. Syphilis