Medical Microbiology Lecture: Bacillus spp. Characteristics
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Medical Microbiology Lecture: Bacillus spp. Characteristics

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Questions and Answers

Which of the following best describes the primary habitat of Bacillus spp.?

  • Soil (correct)
  • Human body
  • Air
  • Water

    • What is the major factor responsible for the virulence of Bacillus anthracis?

  • Capsule (correct)
  • Flagella
  • Fimbriae
  • Pili

    • In which type of animals is Bacillus anthracis primarily a disease?

  • Aquatic animals
  • Herbivorous animals (correct)
  • Carnivorous animals
  • Omnivorous animals

    • What is the characteristic shape of Bacillus anthracis bacteria?

    <p>Rod-shaped</p> Signup and view all the answers

    Under which conditions do central, non-swelled spores of B. anthracis develop?

    <p>In culture outside the human body</p> Signup and view all the answers

    Which protein component of B. anthracis forms edema toxin when combined with protective antigen?

    <p>Edema factor (EF)</p> Signup and view all the answers

    What is the causative agent of pulmonary anthrax?

    <p>Bacillus anthracis</p> Signup and view all the answers

    What is the incubation period for pulmonary anthrax?

    <p>Up to 6 weeks</p> Signup and view all the answers

    Which species causes food poisoning with enterotoxins that have emetic or diarrheal effects?

    <p>Bacillus cereus</p> Signup and view all the answers

    What is the characteristic appearance of B. anthracis colonies on blood agar?

    <p>Large, grayish, and non-hemolytic with an irregular border</p> Signup and view all the answers

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