Fungal Biology Terminologies
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Questions and Answers

Which type of fungus is responsible for causing Tinea capitis?

  • Trichophyton
  • Epidermophyton
  • Candida
  • Microsporum (correct)
  • Which of the following is NOT a type of dermatophyte fungus?

  • Trichophyton
  • Epidermophyton
  • Microsporum
  • Candida (correct)
  • Which of the following is a subcutaneous mycosis disease caused by a dimorphic fungus?

  • Candidiasis
  • Maduromycosis
  • Sporotrichosis (correct)
  • Chromoblastomycosis
  • What is the most common causative agent of Maduromycosis (Madura foot)?

    <p>Pseudallescheria boydii</p> Signup and view all the answers

    Which of the following is a common clinical manifestation of Candidiasis?

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

    What is the diagnostic feature for Sporotrichosis observed under the microscope?

    <p>Asteroid bodies</p> Signup and view all the answers

    Which of the following stains is used to detect mucinous substances in fungal infections?

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

    Which of these fungal infections typically resolves without treatment in immunocompetent individuals?

    <p>Pulmonary histoplasmosis</p> Signup and view all the answers

    What is the first-line treatment for progressive pulmonary disease and disseminated histoplasmosis?

    <p>Amphotericin B</p> Signup and view all the answers

    Which of the following is a characteristic of the fungus that causes paracoccidioidomycosis?

    <p>It is a thermally dimorphic fungus found in Brazil and South America.</p> Signup and view all the answers

    Which of the following specimens is most commonly used for the laboratory diagnosis of systemic mycoses?

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

    What is the purpose of the 10% KOH preparation in the microscopic examination of fungal specimens?

    <p>To dissolve the keratin matrix and reveal fungal structures</p> Signup and view all the answers

    Which of the following terms refers to hyphae that are located above the agar surface?

    <p>Aerial hyphae</p> Signup and view all the answers

    Which term describes an asexual propagule formed by the breaking up of a hypha?

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

    What is the term used to describe a conidium formed by budding along a hypha, pseudohypha, or single cell, as in yeast?

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

    Which term describes an enlarged, rounded conidium that is thick-walled and may be located at the end or along the hypha, singly or in chains?

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

    What term is used to describe fungal structures that are brown to black due to the presence of melanotic pigment in the cell wall?

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

    Which term describes a process of asexual reproduction in which the new cell develops as a similar outgrowth from the older parent cell, as in yeast or yeast-like fungi?

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

    Which of the following is NOT a cause of opportunistic mycoses?

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

    Which of the following statements about actinomycetes is INCORRECT?

    <p>They are responsible for causing candidiasis</p> Signup and view all the answers

    Which of the following hyaline fungi could be a contaminant or implicated in infection?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is NOT a characteristic of phaeohyphomycetes?

    <p>They include species of Candida and Cryptococcus</p> Signup and view all the answers

    Which of the following statements about hyphae is CORRECT?

    <p>They can be either aseptate or septate</p> Signup and view all the answers

    Which of the following is NOT a type of asexual spore?

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

    What type of staining technique is commonly used for the identification of Histoplasma capsulatum?

    <p>Giemsa stain</p> Signup and view all the answers

    At what temperature is the dimorphic, tuberculate macroconidia of Histoplasma capsulatum cultured?

    <p>25°C</p> Signup and view all the answers

    Which of the following fungal infections is characterized by the presence of spherules with endospores upon microscopy?

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

    What is the distinctive characteristic of Blastomyces dermatitidis seen under microscopy?

    <p>Thick-walled, broad-based, single budding yeast</p> Signup and view all the answers

    Which staining technique is not commonly used for the identification of systemic mycoses?

    <p>Gram stain</p> Signup and view all the answers

    Which fungal infection can be identified through a positive histoplasmin skin test indicating exposure only?

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

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