General microbiology


Gram-positive spore-forming bacilli with subterminal spore



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Gram-positive spore-forming bacilli with subterminal spore

  • Thick gram-positive non-sporeforming bacilli

  • Gram-positive spore-forming bacilli with terminal spore

  • Thin mobile spore-forming bacilli with central spore

  • Thick gram-positive non-sporeforming bacilli

  • The causative agent of botulism causes severe food poisoning. Specify the most characteristic morphological feature of botulism causative agent:

    1. Gram-positive bacillus with subterminal spore

    2. Thick gram-positive non-spore-forming bacillus

    3. Gram-positive bacillus with terminal spore

    4. Thin mobile bacillus with central spore

    5. Thick gram-positive bacillus without spores and flagella

  • A patient has food poisoning. Laboratory analysis revealed a culture of anaerobic gram-positive spore-forming bacteria. What is the most likely kind of the isolated causative agent?

    1. C. perfringens

    B. Proteus vulgaris C. P. mirabilis
    D. Vibrio parahemolyticus E. Esherichia coli

    1. While studying a microslide obtained from the punctuate of a regional lymph node and stained by Romanovsky-Giemsa method a physician revealed some light pink thin microorganisms with 12-14 regular spiral coils and pointed ends, up to 10-13 micrometer long. This might be the causative agent of the following disease:

      1. Syphilis

      2. Trypanosomiasis

      3. Leptospirosis

      4. Relapsing fever

      5. Leishmaniasis

    2. In the micropreparation made from patient’s regional lymph node punctate and stained according to Romanovsky-Giemsa method, the doctor found out thin microorganisms with 12-14 equal ringlets and pale-pink sharp pointes 10-13 mkm in length. The pathogen of what disease is it about?

      1. Leishmaniasis

      2. Leptospirosis

      3. Surra


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