Microbiology Lecture 24: Bacterial Genera Overview

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Questions and Answers

Which bacterial genus is known for causing gonorrhea and is strictly a human pathogen?

  • Neisseria (correct)
  • Streptococcus
  • Clostridium
  • Bacillus

What is the most commonly reported sexually transmitted disease in the United States, second only to chlamydia?

  • Gonorrhea (correct)
  • Syphilis
  • Chancroid
  • Trichomoniasis

Which bacterial genus consists of aerobic gram-negative bacteria, typically coccoid shaped, and arranged in pairs (diplococci)?

  • Chlamydia
  • Rickettsiaceae
  • Neisseria (correct)
  • Treponema

Which bacterial genus can colonize the nasopharynx of healthy people without producing disease?

<p>Neisseria (C)</p> Signup and view all the answers

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

<p>Neisseria (D)</p> Signup and view all the answers

Which bacterial pathogen is responsible for causing purulent urethral discharge and dysuria following a 2- to 5-day incubation period?

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

Which pathogen causes a lifethreatening disease characterized by septicemia with or without meningitis, and is associated with mortality approaching 100% in untreated patients?

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

Which bacterial pathogen is responsible for causing Meningitis through penetration into mucosal cells, multiplication, and establishment of infection in the subepithelial space?

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

Which bacterial pathogen is categorized as a spirochete with distinctive double-membrane and is responsible for causing human disease through sexual transmission?

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

Which bacterial pathogen is extremely sensitive to oxygen, has not been cultured regularly in vitro due to dependency on host cells, and is visualized using darkfield microscopy or immuno-fluorescent stains for diagnosis?

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

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