KROK 1 2010 – Question 191 · KROK (Medicine) · Microbiology, Virology, and Immunology
During examination of a patient a dentist revealed a lot of "white spots" - zones of enamel demineralization. What microorganisms take part in the development of this process?
- A. Veilonella parvula
- B. Staphylococcus epidermidis
- C. Streptococcus pyogenes
- D. Streptococcus salivarius
- E. Streptococcus mutans
Hint
Ask which plaque-dwelling bacterium turns dietary sugar into acid right at the tooth surface, causing the earliest enamel change.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Microbiology, Virology, and Immunology
- Quite often the cause of secondary immunodeficiency is an infection involvement, when the causative agents propagate directly in the cells of immune…
- Sanitary bacteriological research on water by the membrane filter method revealed two red colonies on a membrane filter (Endo agar) through which…
- A 55-year-old male patient was hospitalised to a surgical clinic for suspected septicemia. What material should be taken for analysis?
- During examination of a 6-year-old child a doctor revealed greyish films on the pharyngeal tonsils. Their removal provoked moderate haemorrhage…
- A man died from an acute infectious disease accompanied by fever, jaundice, haemorrhagic rash on the skin and mucous membranes as well as by acute…
- Microscopic examination of a gram-stained scrape from a patient’s tongue revealed oval, round, elongated chains of dark-violet gemmating cells. What…