Microbiology Lecture 24: Bacterial Genera Overview
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Questions and Answers

Which bacterial genera discussed in the lecture are mostly responsible for sexually transmitted diseases?

  • Borrelia and Rickettsiaceae
  • Neisseria and Chlamydia (correct)
  • Treponema and Borrelia
  • Neisseria and Rickettsiaceae
  • What is the typical shape and arrangement of Neisseria species?

  • Spiral and single
  • Spherical and single
  • Rod-shaped and clustered
  • Spherical and arranged in pairs (correct)
  • Which bacterial species can colonize the nasopharynx of healthy people without producing disease?

  • Neisseria gonorrhoeae
  • Treponema pallidum
  • Borrelia burgdorferi
  • Neisseria meningitidis (correct)
  • Which bacterial genera are intracellular pathogens?

    <p>Rickettsiaceae and Chlamydia</p> Signup and view all the answers

    Which bacterium is fastidious and only grows on enriched chocolate agar and other supplemented media?

    <p>Neisseria gonorrhoeae</p> Signup and view all the answers

    Which of the following bacterial species is responsible for causing meningococcal disease?

    <p>Neisseria meningitidis</p> Signup and view all the answers

    What is the primary mode of transmission for Neisseria gonorrhoeae?

    <p>Sexual contact</p> Signup and view all the answers

    Which complement system deficiencies are estimated to increase the risk of meningococcal disease by 6000-fold?

    <p>C5, C6, C7, C8</p> Signup and view all the answers

    What is the most important treponemal species that causes human disease?

    <p>Treponema pallidum</p> Signup and view all the answers

    How are spirochetes such as Treponema pallidum visualized for diagnosis?

    <p>Darkfield microscopy or immuno-fluorescent stains</p> Signup and view all the answers

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