Gram-positive diplococci with somewhat pointed opposite ends. What microorganisms were
Revealed in the sputum?
A Streptococcus pneumoniae
B Staphylococcus aureus
C Klebsiella pneumoniae
D Neisseria meningitidis
E Neisseria gonorrhoeae
39
Serological diagnostics of infectious diseases is based upon specific interaction with antigenes.
Specify the serological reaction that underlies adhesion of microorganisms when they are
Affected by specific antibodies in presence of an electrolyte:
A Agglutination reaction
B Precipitation reaction
C Complement-binding reaction
D Hemadsorption reaction
E Neutralization reaction
40
The immunoblot detected gp120 protein in the blood serum. This protein is typical for the
Following disease:
A HIV-infection
B Virus B hepatitis
C Tuberculosis
D Syphilis
E Poliomyelitis
41
HIV has gp41 and gp120 on its surface interacts with target cells of an organism. Which of the
Following human lymphocyte antigens is gp120 complementary bound with?
A CD 4
B CD 3
C CD 8
D CD 19
E CD 28
42
On bacteriological examination of the defecation of a 4-months-old baby with the symptoms of
Acute bowel infection there were revealed red colonies spread in the large quantity in the Endo
Environment. What microorganism can it be?
A Escherichia
B Salmonella
C Staphylococcus
D Streptococcus
E Shigell
43
The contents of vesicles that appeared on the mucous membrane of a patient with variola was
Sent to a virological laboratory. Which of the listed changes were revealed during the smear
Microscopy?
A Paschen bodies
B Babes-Negri bodies
C Guarnieri bodies
D Babes-Ernst bodies
E Syncytium
44
Bacteriological examination of a patient with food poisoning required inoculation of a pure
Culture of bacteria with the following properties: gram-negative movable bacillus that grows in the
Endo's medium in form of colourless colonies. A representative of which species caused this
Disease?
A Salmonella
B Shigella
C Iersinia
D Esherichia
E Citrobacter
45
Examination of a young man in the AIDS centre produced a positive result of immune-enzyme
Assay with HIV antigens. Patient's complaints about state of his health were absent. What can
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The positive result of immune-enzyme assay be evidence of?
A HIV infection
B Being ill with AIDS
C Being infected with HBV
D Having had AIDS recently
E HBV persistence
46
Microscopy of stained (Ziehl-Neelsen staining) smears taken from the sputum of a patient with
Chronic pulmonary disease revealed red bacilli. What property of tuberculous bacillus was
Shown up?
A Acid resistance
B Alkali resistance
C Alcohol resistance
D Capsule formation
E Sporification
47
Reaction of passive hemagglutination conducted with erythrocytic typhoid Vi-diagnosticum
Helped to reveal some antibodies in the dilution of the patient's serum at a ratio of 1:80 that
Exceeds the diagnostic titer. Such result witnesses of:
A Being a potential carrier of typhoid bacilli
B Being ill with acute typhoid fever
C Typhoid fever recurrence
D Incubation period of typhoid fever
E Reconvalescence of a patient ill with typhoid fever
48
In order to determine toxigenicity of diphtheria bacilli a strip of filter paper impregnated with
Antitoxic diphtherial serum was put on the dense nutrient medium. There were also inoculated a
Microbal culture under examination and a strain that is known to be toxigenic. If the microbal
Culture under examination produces exotoxin, this wil result in formation of:
A Precipitin lines
B Haemolysis zones
C Zones of diffuse opacification
D Zones of lecithovitellinous activity
E Precipitin ring
49
A 50-year-old patient with typhoid fever was treated with Levomycetin, the next day his
condition became worse, temperature rised to 39,60 С . What caused worthening?
A The effect of endotoxin agent
B Allergic reaction
C Irresponsiveness of an agent to the levomycetin
D Secondary infection addition
E Reinfection
50
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A patient underwent esophagogastroduodenoscopy. Analysis of the biopsy material enabled
Doctors to diagnose him with helicobacteriosis. What property of the bacteria found in this
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