Joshua Angelo 2024 IN-HOUSE REVIEW EDITION Colony Morphology
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Joshua Angelo 2024 IN-HOUSE REVIEW EDITION Colony Morphology

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Questions and Answers

What is the main structural unit of molds?

Hyphae

Which of the following is NOT a characteristic of fungi?

Chlorophyllous

What is the term used to describe the mass of hyphae?

Mycelium

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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