Mycology and Virology Lecture Quizzes
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Mycology and Virology Lecture Quizzes

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Questions and Answers

What is the macroscopic appearance of niger spores?

  • Black and shiny
  • Buff or cream colored
  • Yellow and smooth
  • Darkly pigmented and roughened (correct)

    • Which of the following characteristics is true about niger hyphae?

  • Darkly pigmented
  • Hyaline and septate (correct)
  • Non-septate
  • Roughened

    • In what timeframe does a niger colony typically mature?

  • 7-10 days
  • 2-6 days (correct)
  • 3-5 days
  • 1-3 days

    • What contributes to the black dotted appearance of an old niger colony?

    <p>Long conidiospores</p> Signup and view all the answers

    Which environmental isolates are commonly contaminated by Mucorales?

    <p>Grains, breads, and fruits</p> Signup and view all the answers

    What is the main characteristic of mucormycosis related to vascular invasion?

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

    What is the most commonly encountered fungi in the laboratory?

    <p>Aspergillus spp.</p> Signup and view all the answers

    How are Aspergillus conidia primarily transmitted?

    <p>By inhalation</p> Signup and view all the answers

    Which clinical manifestation is NOT associated with Aspergillus infections?

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

    Which disease has clinical manifestations that include pulmonary or sinus fungus balls?

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

    How do phialides give rise to conidia in Aspergillus?

    <p>From a primary row of cells called metulae</p> Signup and view all the answers

    What is the characteristic that differentiates Rhizopus from the other fungi mentioned?

    <p>Presence of rhizoids</p> Signup and view all the answers

    Which of the following fungi is commonly recovered from sinus infections?

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

    What is the unique characteristic of the sporangiospores produced by Cunninghamella?

    <p>They are erect and branching into several vesicles</p> Signup and view all the answers

    Which of the following fungi is the most common agent to cause disseminated disease?

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

    What is the characteristic that allows Rhizopus to be distinguished from the other fungi under the microscope?

    <p>Umbrella-shaped sporangiospores</p> Signup and view all the answers

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