2. Skin allergic test

3. Bacteriological examination

4. Biological examination

63. The biovars Classic and El Tor of V. cholerae can be distinguished from each other by which of the following tests:

1. motility test

2. polymyxin susceptibility test

3. slide agglutination test with O1-antiserum

4. bacteriophage susceptibility test

64. The distinguishing characteristics of leprosy causative agent are which of the following: They

1. are acid-fast bacteria

2. grow slowly on enriched media

3. cannot be cultured in vitro

4. produce exotoxin

65. Which of the following culture media can be used for isolation of Salmonella sp. from the patient’s blood and its identification?

1. 10% bile broth

2. Kligler iron agar

3. Levine EMB agar

4. Alkaline agar

66. Which of the following specimens can be examined to diagnose Legionnaires’ disease?

1. Blood

2. Lung tissue

3. Cerebrospinal fluid

4. Sputum

67. Which of the following components of Mycobacterium cell wall make it resistant to acids and some other chemicals?

1. Endospores

2. Mycolic acids

3. LPS

4. Waxes

68. The distinguishing features of Shigella sp. are which of the following: They are

1. glucose-positive

2. gram-negative bacteria

3. facultative anaerobes

4. alkaliphiles

69. Which of the following sentences characterize the diarrheagenic

E. coli?

1. They have specific antigenic structure

2. They are normal intestinal microflora members

3. They may contain plasmids of virulence

4. They can cause salmonellosis

70. The pure culture of suspected Salmonella sp. was inoculated in the Kligler iron agar. Which of the following are possible results of Salmonella sp. growth?

1. red slant

2. black dots in the butt

3. yellow butt

4. yellow slant

71. The cultural properties of C. diphtheriae can be characterized as follows: They

1. are facultative anaerobes

2. grow on Klauberg’ medium

3. grow best in enriched media

4. require the presence of charcoal as absorbent

72. Which of the following sentences concerning the O-indirect haemagglutination test used for serological diagnosis in typhoid fever are true?

1. It requires using of paired patient’s sera

2. It is employed to identify carriers of S. Typhi

3. It helps to confirm the diagnosis in acute period of disease

4. It allows performing serotyping of the causative agent

73. The diphtheria exotoxin modes of action are which of the following: It

1. blocks the acetylcholine release in synapses

2. causes the pseudomembranes formation on mucosal cells

3. causes hemolysis

4. inhibits the synthesis of protein

74. Which of the following are the virulence factors of whooping cough causative agent?

1. Pertussis toxin

2. Extracellular adenylate cyclase

3. Filamentous hemagglutinin

4. Cord-factor

75. Which of the following culture media can be used for E. coli culturing and identification?

1. Endo agar

2. MacConkey agar

3. Levine EMB agar

4. Kligler iron agar

76. The microbiological methods used for infant’s diarrhea diagnosing are which of the following:

1. Biological examination