Bank of Krok testing to module N1

A Bacteriological
B Allergic
C Bacterioscopic
D Serological
E RIA
* At food poisoning a culture of anaerobic, Gram-positive spore-forming rods was isolated. Which species, most probably, does isolated agent belong to?
*C.perfringens
Proteus vulgaris
P.mirabilis
Vibrio parahaemolyticus
Escherichia coli

Corynebacterium diphtheria

87. A patient was admitted to a clinic in grave condition, fever, heavy breathing. Preliminary diagnosis of diphtheria croup was made by the microscopy of throat specimen. What method of staining was used?

A. Peshkov's.
B. Ziehl-Neelsen's.
C.Burri-Gins'.
D.*Neisser's.
E. Ozheshko's.

158. In the smear from the tonsils of a patient with diphtheria suspected there have been revealed blue rods with thick­enings on the ends. What method of staining has been used?

A. *Loeffler's.
B.Burri's.
C.Gins'.
D.Gram's.
E.Neisser's.

* 108. Among the children of a boarding school there are cases of angina. Microscopy of tonsil smears stained by Neisser method revealed yellow rods with dark-brown terminal granules arranged in the form of V, W, and X letters (Rome number 5). What infection can be suspected in this case?

A. Infectious mononucleosis.
D. Tonsillitis.
B. *Diphtheria.
C. Listeriosis.
E. Scarlet fever.

* A pure culture of Corynebacterium diphtheria had been isolated from a patient. After smear preparation and staining with Neisser’s technique next inclusion bodies were revealed:

Starch
Glycogen
*Volutin (polyphosphate)
Sulfur
Drops of neutral lipids

*After examination of 6-year-old girl with angina a doctor suspected diphtheria. He collected a sample from tonsils. Which microscopy appearance is typical for causative agent of this disease?

*Gram-positive rods arranged at angle
Gram-positive cocci arranged in chains
Gram-negative cocci arranged in pairs
Chaotically located Gram-negative rods
Paired Gram-negative cocci

OB-12 While examining a patient an otolaryngologist noticed hyperaemia and significantly edematous tonsils with a grayish film upon them. Microscopical examination of this film revealed some gram-positive bacilli placed at an angle with each other. What disease might be suspected?