Chronological Appearance of Skin Lesions Quiz
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Questions and Answers

What is the appearance of colonies of Erysipelothrix rhusiopathiae on serum or blood agar?

  • Greenish and slimy
  • Large and opaque
  • Small, clear, and glistening (correct)
  • Red and rough
  • Which animal is commonly affected by Erysipelothrix rhusiopathiae?

  • Dogs
  • Rabbits
  • Cats
  • Turkeys (correct)
  • What is the unique characteristic of the cell wall of Erysipelothrix rhusiopathiae?

  • Contains spores for reproduction
  • Does not contain DL-diaminopimelic acid (correct)
  • Has flagella for movement
  • Contains DL-diaminopimelic acid
  • What disease form is Erysipelothrix rhusiopathiae known for causing?

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

    What is the total number of serotypes identified for Erysipelothrix rhusiopathiae?

    <p>22</p> Signup and view all the answers

    What is the appearance of Erysipelothrix rhusiopathiae colonies on gelatin medium?

    <p>Bottle brush-like</p> Signup and view all the answers

    What is the appearance of Listeria monocytogenes under the microscope?

    <p>Coccoid forms</p> Signup and view all the answers

    Why is acid-fast staining technique not applicable for Listeria monocytogenes?

    <p>It does not retain the stain applied</p> Signup and view all the answers

    What is the movement of Listeria monocytogenes under the microscope primarily due to?

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

    Why is the surface colonies of Listeria monocytogenes described as small, flat, round, transparent, and glistening?

    <p>Specific colony characteristics</p> Signup and view all the answers

    Which feature of Listeria monocytogenes colonies indicates the presence of individual bacterial colonies or clusters that are too small to be easily discerned?

    <p>Minute points</p> Signup and view all the answers

    What does a narrow zone of beta-hemolysis around Listeria monocytogenes colonies indicate?

    <p>Limited red blood cell lysis</p> Signup and view all the answers

    What is the route of entry for polyarthritis in sheep?

    <p>Docking and castration</p> Signup and view all the answers

    Which factor contributes to the development of vegetation on the heart valves in vegetative endocarditis?

    <p>High fibrin content in the blood</p> Signup and view all the answers

    Which symptom indicates the presence of arthritis in cattle?

    <p>Reluctance to move</p> Signup and view all the answers

    What is the effect of synovial lining hypertrophy in arthritic form of the disease?

    <p>Erosion of cartilage</p> Signup and view all the answers

    When does cyanotic skin appear as a sign in birds?

    <p>At initial stages of illness</p> Signup and view all the answers

    What characteristic feature is observed in joints affected by chronic forms of the disease?

    <p>Enlarged and painful joints</p> Signup and view all the answers

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