30 Questions
Which type of fungus is responsible for causing Tinea capitis?
Microsporum
Which of the following is NOT a type of dermatophyte fungus?
Candida
Which of the following is a subcutaneous mycosis disease caused by a dimorphic fungus?
Sporotrichosis
What is the most common causative agent of Maduromycosis (Madura foot)?
Pseudallescheria boydii
Which of the following is a common clinical manifestation of Candidiasis?
Thrush
What is the diagnostic feature for Sporotrichosis observed under the microscope?
Asteroid bodies
Which of the following stains is used to detect mucinous substances in fungal infections?
Mucicarmine
Which of these fungal infections typically resolves without treatment in immunocompetent individuals?
Pulmonary histoplasmosis
What is the first-line treatment for progressive pulmonary disease and disseminated histoplasmosis?
Amphotericin B
Which of the following is a characteristic of the fungus that causes paracoccidioidomycosis?
It is a thermally dimorphic fungus found in Brazil and South America.
Which of the following specimens is most commonly used for the laboratory diagnosis of systemic mycoses?
Sputum
What is the purpose of the 10% KOH preparation in the microscopic examination of fungal specimens?
To dissolve the keratin matrix and reveal fungal structures
Which of the following terms refers to hyphae that are located above the agar surface?
Aerial hyphae
Which term describes an asexual propagule formed by the breaking up of a hypha?
Arthroconidium
What is the term used to describe a conidium formed by budding along a hypha, pseudohypha, or single cell, as in yeast?
Blastoconidium
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?
Chlamydoconidium
What term is used to describe fungal structures that are brown to black due to the presence of melanotic pigment in the cell wall?
Dematiaceous
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?
Budding
Which of the following is NOT a cause of opportunistic mycoses?
Trichophyton
Which of the following statements about actinomycetes is INCORRECT?
They are responsible for causing candidiasis
Which of the following hyaline fungi could be a contaminant or implicated in infection?
All of the above
Which of the following is NOT a characteristic of phaeohyphomycetes?
They include species of Candida and Cryptococcus
Which of the following statements about hyphae is CORRECT?
They can be either aseptate or septate
Which of the following is NOT a type of asexual spore?
Zygospores
What type of staining technique is commonly used for the identification of Histoplasma capsulatum?
Giemsa stain
At what temperature is the dimorphic, tuberculate macroconidia of Histoplasma capsulatum cultured?
25°C
Which of the following fungal infections is characterized by the presence of spherules with endospores upon microscopy?
Coccidiomycosis
What is the distinctive characteristic of Blastomyces dermatitidis seen under microscopy?
Thick-walled, broad-based, single budding yeast
Which staining technique is not commonly used for the identification of systemic mycoses?
Gram stain
Which fungal infection can be identified through a positive histoplasmin skin test indicating exposure only?
Histoplasmosis
Test your knowledge of fungal biology terminologies including aerial hyphae, vegetative hyphae, arthroconidium, asexual reproduction, assimilation, and blastoconidium.
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