Joshua Angelo 2024 IN-HOUSE REVIEW EDITION Colony Morphology
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Questions and Answers

What is the main structural unit of molds?

  • Spores
  • Yeast
  • Rhizoids
  • Hyphae (correct)
  • Which of the following is NOT a characteristic of fungi?

  • Chlorophyllous (correct)
  • Aerobic
  • Nucleated
  • Cell wall with chitin
  • What is the term used to describe the mass of hyphae?

  • Mycelium (correct)
  • Coenocytic
  • Spiral
  • Septate
  • What is the term used to describe hyphae that have cross-walls?

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

    Which of the following is NOT a type of conidium?

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

    What is the term used to describe hyphae that lack cross-walls?

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

    What is the most common cause of phaeohyphomycosis?

    <p>Dreschlera spicifera</p> Signup and view all the answers

    What is the appearance of the colony morphology in the mold form?

    <p>Daisy-like, rosette, flowerette with a brown to black greasy appearance</p> Signup and view all the answers

    Which condition is also known as Chromomycosis or Verrucous dermatitis?

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

    Which organism's colony morphology is described as 'Vase-like/phialides, flask shaped with collarettes'?

    <p>Phialophora verrucosa</p> Signup and view all the answers

    Which characteristic is NOT mentioned for Fonsecaea compactum?

    <p>Flask shaped with collarettes</p> Signup and view all the answers

    Which fungal infection is known as 'desert rheumatism' and 'valley fever'?

    <p>Coccidioides immitis</p> Signup and view all the answers

    What is the culture medium used for growing Duboisii, a causative agent of African histoplasmosis?

    <p>Pines medium</p> Signup and view all the answers

    What is the infective stage of Coccidioides immitis?

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

    Which fungus is associated with a yeast form that resembles B.dermatitidis in spherule appearance?

    <p>Histoplasma capsulatum</p> Signup and view all the answers

    Which fungal infection is systemic-fatal and predominantly affects immunocompromised individuals?

    <p>Penicillium marneffei</p> Signup and view all the answers

    What is the mode of transmission of Mucormycosis caused by Zygomycota/Mucorales?

    <p>Inhalation of sporangiospores</p> Signup and view all the answers

    What type of tinea infection affects the head?

    <p>Tinea capitis</p> Signup and view all the answers

    Which organism's colony has a fluffy white appearance with a lemon yellow reverse on potato dextrose agar (PDA)?

    <p>Microsporum canis</p> Signup and view all the answers

    Which of the following is a characteristic of Trichophyton rubrum?

    <p>Colony has a red reverse</p> Signup and view all the answers

    What is a distinctive feature of Epidermophyton floccosum macroconidia?

    <p>Smooth and thin-walled</p> Signup and view all the answers

    Which organism's colony is characterized as having a 'suede leather appearance'?

    <p>Epidermophyton floccosum</p> Signup and view all the answers

    Which test is positive for Trichophyton mentagrophytes?

    <p>Hair baiting/penetration</p> Signup and view all the answers

    Which fungal infection is most commonly associated with rhinocerebral zygomycosis in diabetic patients with ketoacidosis?

    <p>Lichtheimia infection</p> Signup and view all the answers

    Which fungal colony is characterized by rapid growth, woolly colonies, and the presence of brown rhizoids connected by stolons?

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

    Which fungal infection is commonly associated with neutropenia and is the single most predisposing factor?

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

    Which fungal colony is described as having hyaline septate hyphae, dichotomously branched hyphae, and uniseriate or biseriate phialides?

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

    Which fungal infection is associated with meningitis, pulmonary disease, and septicemia, particularly in AIDS patients?

    <p>Cryptococcus neoformans infection</p> Signup and view all the answers

    Which fungal colony is described as having a bright salmon pink color and resembling Cryptococcus neoformans?

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

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