Fungal Infections and Detection Methods Quiz
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Questions and Answers

What structures are usually connected to one another by septate hyphae called stolons in Mucorales?

  • Apophysis
  • Columella
  • Sporangiophores (correct)
  • Rhizoids
  • How do rhizoids anchor the organism to the agar surface in Mucorales?

  • By creating branching roots (correct)
  • By attaching to columella
  • By producing thrombosis
  • By attaching to sporangiophores
  • Which type of specimen is NOT ideal for isolating Mucorales due to their sensitivity to environmental changes?

  • Blood cultures (correct)
  • Nasal discharge or scrapings
  • Deep tissue or lesion sample
  • Respiratory samples
  • What is the common presentation of Mucormycosis, particularly in the rhinocerebral form?

    <p>Retroorbital spread</p> Signup and view all the answers

    Which structure in Aspergillus niger is responsible for the rapid production of thrombosis and necrosis of tissue?

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

    What type of sample is recommended for transport within 2 hours upon collection when dealing with Mucorales?

    <p>Nasal discharge or scrapings</p> Signup and view all the answers

    What is the key difference in the colony appearance of Aspergillus niger between a young colony and an old colony?

    <p>Yellow color vs. black dotted surface</p> Signup and view all the answers

    Which fungal structure can be described as having long conidiophores, large metulae, and smaller biseriate phialides?

    <p>Aspergillus niger</p> Signup and view all the answers

    In what way do phialoconidia in the laboratory diagnosis differ based on their chain formation?

    <p>Remaining in long chains vs. easily disturbed into individual conidia</p> Signup and view all the answers

    Which feature of Aspergillus niger's macroscopic appearance distinguishes it from other fungal colonies?

    <p>Black dotted surface due to conidia</p> Signup and view all the answers

    Which term describes the central axis of the sporangia in Mucorales?

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

    What distinguishing feature do some Mucorales species possess that helps anchor the sporangiophore within the soil or growth substrate?

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

    Which action is emphasized when monitoring patients at high risk for developing invasive fungal infections?

    <p>Utilizing antigen-protein based assays</p> Signup and view all the answers

    Which disease entity is still unclear regarding its association with Aspergillus niger despite its common presence in clinical laboratories?

    <p>Invasive fungal infections</p> Signup and view all the answers

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