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

Under which conditions is Neisseria gonorheae grown in the laboratory?

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

Which factor of Neisseria meningitidis prevents phagocytosis and bacteriolysis?

<p>Capsule (A)</p> Signup and view all the answers

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

<p>The most common type (D)</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 (C)</p> Signup and view all the answers

Which group carries the highest carriage rate of Neisseria meningitidis?

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

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

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

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

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

What is the shape of Neisseria gonorrhoeae?

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

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

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

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

<p>To inhibit bacterial growth (B)</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 (D)</p> Signup and view all the answers

What is the reagent used in the oxidase test?

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

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

<p>FitzHugh Curtis Syndrome (D)</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 (B)</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 (B)</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 (A)</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 (A)</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 (C)</p> Signup and view all the answers

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

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

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

<p>Glucose and maltose (D)</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 (A)</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 (D)</p> Signup and view all the answers

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

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

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