Medical Bacteriology II: Gram Negative Bacteria
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Questions and Answers

Which of the following is a Gram-negative cocci bacterium?

  • Neisseria meningitidis (correct)
  • Moraxella catarrhalis
  • Borrelia burgdorferi
  • Campylobacter jejuni
  • Which bacterium is characterized by Gram-negative curved rods with polar flagella known as 'gulls’ wings'?

  • Neisseria gonorrhoeae
  • Campylobacter jejuni (correct)
  • Treponema pallidum
  • Moraxella catarrhalis
  • What is the distinguishing feature of Helicobacter pylori?

  • Spirochete morphology
  • Microaerophilic growth (correct)
  • Gram-negative cocci morphology
  • Anaerobic growth
  • Which of the following bacteria is found in the intestinal tracts of humans, cattle, sheep, dogs, cats, and poultry?

    <p>Campylobacter jejuni</p> Signup and view all the answers

    Which bacterium is responsible for causing meningococcal disease?

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

    Which bacterium is characterized by Gram-negative curved, helical or spiral morphology and causes cholera?

    <p>Vibrio cholerae</p> Signup and view all the answers

    What is the primary mode of transmission for Campylobacter jejuni?

    <p>Contaminated water</p> Signup and view all the answers

    What is a distinguishing feature of Helicobacter pylori?

    <p>Urease-positive</p> Signup and view all the answers

    Which disease is commonly associated with Helicobacter pylori infection?

    <p>Chronic gastritis and duodenal ulcers</p> Signup and view all the answers

    At what temperature is Helicobacter pylori cultured?

    <p>37°C</p> Signup and view all the answers

    What is the primary mode of transmission for Helicobacter pylori?

    <p>Fecal-oral</p> Signup and view all the answers

    What is the most common cause of infectious diarrhea worldwide in the U.S.?

    <p>Campylobacter enteritis</p> Signup and view all the answers

    What is the method used for diagnosing Helicobacter pylori involving the patient swallowing labeled 13C-urea?

    <p>Urea breath test</p> Signup and view all the answers

    What is the main treatment regimen for Helicobacter pylori infection known as triple therapy?

    <p>Omeprazole + amoxicillin + clarithromycin</p> Signup and view all the answers

    What does the result of a urease breath test indicate in relation to H. pylori infection?

    <p>The absence of H. pylori in the stomach</p> Signup and view all the answers

    What is one of the complications associated with Campylobacter jejuni infection?

    <p>Reactive arthritis (HLA-B27)</p> Signup and view all the answers

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