Microbiology: Infectious Agent Identification Quiz

Which pair of yeasts are most closely related?

Which of the following tests is used for the presumptive identification of Candida albicans?

Which yeast isolate produces only blastoconidia on cornmeal Tween 80 agar?

Which yeast isolate is capable of forming ascospores?

Which is the most likely identification for a germ tube–negative, pink yeast isolate recovered from a patient with AIDS?

Which Candida species is known to produce chlamydospores?

Which environment is most commonly associated with an increased incidence of Histoplasmosis?

What is the cause of white piedra?

Which species is a keratinophilic saprophyte?

Which of the following is the most likely identification for the fungal species described in the text?

Which Trichophyton species causes the favus type of tinea capitis seen in the Scandinavian countries and in the Appalachian region of the United States?

The Hair Baiting Test is used to differentiate which two species of Trichophyton that produce red colonies on Sabouraud agar plates?

A mold that produces colonies with a dark brown, green-black, or black appearance of both the surface and reverse side is classified as a:

A rapidly growing hyaline mold began as a white colony but soon developed a black "pepper" effect on the agar surface. The older colony produced a black matte, making it resemble a dematiaceous mold. What is the most likely identification?

Which dematiaceous mold forms flask-shaped phialides, each with a flask-shaped collarette?

What is the most likely identification of the hyaline mold recovered from the AIDS patient?

Which Aspergillus spp. is most likely responsible for the fungus-ball infection described?

What is the most likely identification of the rapidly growing, nonseptate mold that produced cotton candy-like colonies?

Which yeast was the cause of meningitis in the HIV-infected male patient?

What is the most likely reason for the rose-colored colonies with lavender centers produced by the hyaline mold from the AIDS patient?

Why did the Aspergillus spp. responsible for the fungus-ball infection only sporulate from the top half of the vesicles?

Which of the following fungi is considered normal microflora but can also cause clinically significant infections?

Based on the clinical presentation, which fungal agent is most likely responsible for the child's hair loss and fluorescence under a Wood's lamp?

Which statement is true about the histopathology of Histoplasma capsulatum infection?

Which environment is most commonly associated with an increased incidence of blastomycosis?

Which environment is most commonly associated with an increased incidence of coccidioidomycosis?

Which environment is most commonly associated with an increased incidence of cryptococcosis?