Bacteriology Lecture: Family Neisseriaceae
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Questions and Answers

Which genus in the family Neisseriaceae includes the significant human pathogens N.gonorrheae and N.meningitidis?

  • Kingella
  • Moraxella
  • Neisseria (correct)
  • Acinetobacter

    • Neisseria gonorrhoeae causes acute pyogenic infection of columnar and transitional epithelium in which of the following body parts?

  • Urethra (correct)
  • Lungs
  • Lower intestines
  • Kidneys

    • What is the incubation period for gonorrhea caused by Neisseria gonorrhoeae?

  • 1-2 weeks
  • 1-3 days
  • 5-10 days
  • 2-7 days (correct)

    • Newborns exposed to Neisseria gonorrhoeae may develop which condition known as Crede’s prophylaxis?

    <p>Ophthalmia neonatorum</p> Signup and view all the answers

    Which of the following Neisseria species is mostly asymptomatic in both males and females despite being present on mucus membranes?

    <p>N.lactamica</p> Signup and view all the answers

    Under which conditions is Neisseria gonorheae grown in the laboratory?

    <p>High CO2 concentration</p> Signup and view all the answers

    Which factor of Neisseria meningitidis prevents phagocytosis and bacteriolysis?

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

    What type of disease is meningitis in relation to Neisseria meningitidis?

    <p>The most common type</p> Signup and view all the answers

    Which sites in the body are affected by the petechial rash associated with Neisseria meningitidis infection?

    <p>Lower extremities and joints</p> Signup and view all the answers

    Which group carries the highest carriage rate of Neisseria meningitidis?

    <p>Military recruits</p> Signup and view all the answers

    What stimulates cytokines like interleukins in response to Neisseria meningitidis endotoxin release?

    <p>Blood-brain barrier</p> Signup and view all the answers

    Which type of diseases can be caused by invasive meningococcal disease?

    <p>Meningitis, meningococcemia, and pneumonia</p> Signup and view all the answers

    What is the shape of Neisseria gonorrhoeae?

    <p>Coffee bean</p> Signup and view all the answers

    What is the ideal atmosphere for the growth of Neisseria gonorrhoeae?

    <p>5-10% CO2</p> Signup and view all the answers

    What is the purpose of using calcium alginate in specimen collection?

    <p>To inhibit bacterial growth</p> Signup and view all the answers

    What is the principle behind coagglutination in immunologic method?

    <p>Agglutination of antibodies to gonorrheal antigens with S.aureus cells</p> Signup and view all the answers

    What is the reagent used in the oxidase test?

    <p>Both A and B</p> Signup and view all the answers

    What is the name of the syndrome caused by Neisseria gonorrhoeae?

    <p>FitzHugh Curtis Syndrome</p> Signup and view all the answers

    What is the main component of the chocolate agar base in the Modified Thayer-Martin Culture Medium?

    <p>Defibrinated sheep RBC</p> Signup and view all the answers

    Which of the following antibiotics inhibits swarming Proteus in the Modified Thayer-Martin Culture Medium?

    <p>Trimethoprim lactate</p> Signup and view all the answers

    What is the purpose of Co-agglutination test in the diagnosis of N. gonorrhoeae?

    <p>To detect the presence of antigens on the surface of N. gonorrhoeae</p> Signup and view all the answers

    What is the mechanism of Plasmid mediated high level tetracycline resistance (TRNG) in N. gonorrhoeae?

    <p>Pumping out of tetracycline from the cell</p> Signup and view all the answers

    Which of the following is NOT a characteristic of DFA?

    <p>Uses polyclonal antibodies directed against outer membrane proteins</p> Signup and view all the answers

    What is the treatment of choice for resistant strains of N. gonorrhoeae?

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

    What specific condition is caused by a hemorrhage into the adrenal glands in the context of fulminant meningococcemia?

    <p>Waterhouse-Friderichsen syndrome</p> Signup and view all the answers

    What selective medium can be used to culture N. meningitidis?

    <p>Modified Thayer-Martin or Martin-Lewis medium</p> Signup and view all the answers

    Which carbohydrates will N. meningitidis utilize in the CHO utilization reactions?

    <p>Glucose and maltose</p> Signup and view all the answers

    What are the colony characteristics of Moraxella catarrhalis when grown on a chocolate agar plate?

    <p>Pink coloration, opaque, and smooth</p> Signup and view all the answers

    Which test can be performed on any growth resembling N. meningitidis for confirmation of the organism?

    <p>Oxidase test</p> Signup and view all the answers

    What is the result of DIC in the context of fulminant meningococcemia?

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

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