Medical Microbiology: Mycobacteria and Related Bacteria
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Medical Microbiology: Mycobacteria and Related Bacteria

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Questions and Answers

What is a key characteristic of mycobacteria?

  • They lack mycolic acid in their cell wall
  • They are aerobic and non-motile (correct)
  • They are gram-positive bacteria
  • They produce endospores and capsules

    • Why are mycobacteria considered acid-fast?

  • They have a hydrophilic cell wall
  • Their cell wall is rich in mycolic acid (correct)
  • They lack a cell membrane
  • They contain endospores

    • What is the main cause of tuberculosis (TB) in humans and animals?

  • M. avium
  • M. tuberculosis (correct)
  • M. leprae
  • M. bovis

    • Which mycobacterium causes leprosy?

    <p>M. leprae</p> Signup and view all the answers

    What is the main reason mycobacteria are considered acid-fast?

    <p>Presence of a hydrophobic, waxy cell wall rich in mycolic acid</p> Signup and view all the answers

    What is the most common site of tuberculosis infection?

    <p>Lungs (pulmonary TB)</p> Signup and view all the answers

    What is the medical classification for the mycobacterium that causes leprosy (Hansen’s disease)?

    <p>M. leprae</p> Signup and view all the answers

    Which mycobacterium causes tuberculosis (TB) in humans and animals?

    <p>Mycobacterium tuberculosis</p> Signup and view all the answers

    Which system can tuberculosis affect, in addition to the lungs?

    <p>Central nervous system</p> Signup and view all the answers

    What is the main cause of the chronic symptoms of tuberculosis?

    <p>Delayed hypersensitivity or host tissue reaction response</p> Signup and view all the answers

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