Microbiology Multiple Choice Questions on “Diseases Caused by Fungi”.
1. Dermatophytic diseases attributed infections to ______________
A. humans
B. insects
C. monkeys
D. birds
Answer: B
Clarification: Dermatophytic diseases attributed infections to insects and thus the Romans called these infections tinea, meaning “small insect larva”.
2. Fungus diseases that occur on the nails, skin, hair are referred to as systemic mycoses.
A. True
B. False
Answer: B
Clarification: Fungus diseases that occur on the nails, skin, hair, and mucous membranes are referred to as superficial mycoses or dermatomycoses.
3. Ringworm of the scalp is known as ______________
A. tinea capitis
B. tinea pides
C. tinea unguium
D. onychomycosis
Answer: A
Clarification: The dermatologists frequently used a terminology based on the part of the body involved, for example, tinea capitis is ringworm of the scalp.
4. Black piedra is a fungus infection of the ___________
A. skin
B. foot
C. hair
D. nails
Answer: C
Clarification: Black piedra is a fungus infection of hair, characterized by dark brown or black nodules on the hair shaft.
5. Which of the following causes epidemic ringworm of the scalp in children?
A. Microsporum audouinii
B. Trichophyton rubrum
C. Candida albicans
D. Epidermophyton floccosum
Answer: A
Clarification: Microsporum audouinii is a dermatophyte that causes epidemic ringworm of the scalp in children.
6. Tinea versicolor is caused by _______________
A. Piedraia hortae
B. Trichosporon beigelii
C. Malassezia furfur
D. Candida albicans
Answer: C
Clarification: Malassezia furfur causes tinea versicolor, a generalized fungus infection of the skin covering trunk and sometimes other areas of the body.
7. The systemic mycoses are caused mainly by air-borne organisms.
A. True
B. False
Answer: A
Clarification: The systemic mycoses are caused by many air-borne organisms that enter the body through the respiratory tract. They may however enter by other portals.
8. Moniliasis disease is caused by ________________
A. Histoplasma capsulatum
B. Blastomyces dermatitidis
C. Coccidioides immitis
D. Candida albicans
Answer: D
Clarification: Candida albicans causes Moniliasis that may infect any body tissue. It is found on mucous membranes of intestinal tracts.
9. Blastomyces brasiliensis causes which of the following disease?
A. North American blastomycosis
B. South American blastomycosis
C. Histoplasmosis
D. Sporotrichosis
Answer: B
Clarification: Blastomyces brasiliensis causes South American blastomycosis which is most famous in Brazil. Lesions are most commonly found in the mouth and gastrointestinal tract and in the lymph nodes of the neck.
10. Which of the following disease is an infection of the reticuloendothelial system?
A. Cryptococcosis
B. Moniliasis
C. Histoplasmosis
D. Coccidioidomycosis
Answer: C
Clarification: Histoplasmosis may occur as an acute or chronic, localized or disseminated infection of the reticuloendothelial system.
11. Which of the following does not grow in Sabouraud’s glucose agar media?
A. Histoplasma capsulatum
B. Coccidioides immitis
C. Sporothrix schenckii
D. Blastomyces dermatitidis
Answer: D
Clarification: Blastomyces dermatitidis are large round cells that show optimum growth temperature at 37 degrees C on infusion-blood agar media.
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