General microbiology

GENERAL MICROBIOLOGY
Morphology

1. 
   The organisms to be identified have a nucleus surrounded by a nuclear membrane. Genetic material is concentrated predominantly in the chromosomes which consist of DNA strands and protein molecules. These cells divide mitotically. Identify these organisms:
   

A. Eukaryotes B. Bacteriophages
C. Prokaryotes D. Viruses E. Bacteria

2. 
   Infectious agents of various ultrastructures can be etiological agents of infectious diseases. Which of the groups named below HAS NO cellular structure, protein synthesizing, enzyme and energy systems?
   

A. Viruses B. Fungi C. Bacteria
D. Protozoa E. Rickettsia

3. 
   Etiological factors for the infectious diseases are often microorganisms with various ultrastructure. Which of the following microorganism groups relates to the eukaryotes?
   

A. Protozoa B. Viruses C. Viroids
D. Prions E. Scotobacteria

4. 
   A child is presumably ill with diphtheria. A specimen of affected mucous membrane of his pharynx was taken for analysis. The smear was stained and microscopic examination revealed yellow rods with dark blue thickenings on their ends. What structural element of a germ cell was revealed in the detected microorganisms?
   

A. Volutin granules B. Plasmids
C. Capsule D. Spores E. Flagella

5. 
   On examination of a 6-year-old child the doctor noticed greyish film on the child’s tonsils. Microscopy of the smear stained by Neisser method detected there Corynebacterium diphtheria. What morphologic feature was the most indicative for determining the type of the agent?
   
   1. 
      Fence-like position of the agent’s cells
      
   2. 
      Spores that exceed cells in diameter
      
   3. 
      Localization of the causative agent within macrophages
      
   4.