Neisseria Quiz: Gram-negative Cocci
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Questions and Answers

At what temperature do Neisseria species grow on chocolate agar?

  • 42°C
  • 25°C
  • 37°C (correct)
  • 30°C

    • Which Neisseria species is associated with causing gonorrhea?

  • Neisseria meningitidis
  • Neisseria gonorrhoeae (correct)
  • Neisseria pharyngeus
  • Neisseria catarrhalis

    • Which Neisseria species is associated with being a commensal in the mouth and throat?

  • Neisseria meningitidis
  • Neisseria gonorrhoeae
  • Neisseria catarrhalis (correct)
  • Neisseria pharyngeus

    • Which virulence factor of Neisseria gonorrhoeae mediates adherence to surface mucosal epithelia?

    <p>Pili</p> Signup and view all the answers

    Which type of strains producing Por proteins are commonly associated with disseminated disease?

    <p>Por-A proteins</p> Signup and view all the answers

    Name one virulence factor of Neisseria gonorrhoeae and describe its function.

    <p>One virulence factor of Neisseria gonorrhoeae is the Pili, which mediate adherence or colonization of the M.O. to surface mucosal epithelia.</p> Signup and view all the answers

    What is the function of Opa proteins in Neisseria gonorrhoeae?

    <p>Opa proteins in Neisseria gonorrhoeae mediate adherence of the bacteria to each other, and also to the eukaryotic cells.</p> Signup and view all the answers

    What are Por proteins and how do they contribute to the pathogenicity of Neisseria gonorrhoeae?

    <p>Por proteins are porin proteins that form pores or channels in the outer membranes. Strains producing Por-A proteins are commonly associated with disseminated disease because these proteins prevent killing of gonococci in the serum by the serum complement components.</p> Signup and view all the answers

    How is gonococcal ophthalmia neonatorum acquired, and what is its source?

    <p>Gonococcal ophthalmia neonatorum is acquired from the mother's birth canal during childbirth.</p> Signup and view all the answers

    What is the mode of transmission for gonorrhea, and what is its association with adults and neonates?

    <p>Gonorrhea is a venereal disease transmitted by sexual intercourse. Gonococcal infection in adults is almost always sexually transmitted, while gonococcal ophthalmia neonatorum is acquired from the mother's birth canal.</p> Signup and view all the answers

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