Question 1

Compare and contrast dermatophytosis and pityriasis.

Accepted Answer

Both are noninvasive fungal infections o...

Question 2

Histoplasma and Coccidioides produce tuberculosis-like damage to the lungs that can be seen on X-ray images.

Accepted Answer

A) True 
 B)False

Question 3

Pityriasis,characterized by patches of hyperpigmented and depigmented skin on the trunk and arms,is due to cutaneous infection with

Accepted Answer

A)   Epidermophyton floccosum.
B)   Cryptococcus neoformans.
C)   Malassezia furfur.
D)   Microsporum canis.
E)   Trichophyton rubrum.F) B) and D)
G) None of the above

Question 4

The monomorphic fungus Rhizopus is a(n)

Accepted Answer

A)   common bread mold.
B)   toxic mushroom.
C)   opportunistic pathogen.
D)   true pathogen.
E)   common bread mold and an opportunistic pathogen.F) D) and E)
G) A) and B)

Question 5

Which of the following contributes to the pathogenesis of Cryptococcus neoformans?

Accepted Answer

A)   the ability to produce hyphae which penetrate tissues
B)   the production of leukocidins
C)   the production of mucinase
D)   the ability to resist killing after phagocytosis
E)   the production of melanin and the presence of a phagocyte-resistant capsuleF) A) and D)
G) B) and E)

Question 6

Aspergillus causes both mycoses and mycotoxicosis.

Accepted Answer

A) True 
 B)False

Question 7

Vaccines to prevent fungal infection are widely available because attenuated strains are safe.

Accepted Answer

A) True 
 B)False

Question 8

Ringworm is caused by

Accepted Answer

A)   worms infected with fungi invading the skin.
B)   dermatophytes that have invaded deep into the living tissue.
C)   dermatophytes growing in the outer dead tissue layers of the skin (epidermis) .
D)   a hypersensitivity caused by superficial contact with dermatophytes.
E)   toxins produced by dermatophytes.F) A) and D)
G) B) and E)

Question 9

Chronic low-level ingestion of ________ may cause liver cancer.

Accepted Answer

A)   aflatoxin
B)   aspergillin
C)   ergotamine
D)   phalloidin
E)   psilocybinF) All of the above
G) B) and E)

Question 10

Which of the following dermatophytes infects hair as well as skin?

Accepted Answer

A)   Microsporum canis
B)   Malassezia furfur
C)   Fonsecaea pedrosoi
D)   Epidermophyton floccosum
E)   Trichophyton rubrumF) A) and C)
G) B) and E)

Question 11

The opportunistic pathogen ________ is metabolically and morphologically distinctive from other fungi and is not effectively treated with antifungal medications.

Accepted Answer

A)   Candida albicans
B)   Blastomyces dermatitidis
C)   Aspergillus
D)   Microsporum
E)   Pneumocystis jiroveciiF) A) and B)
G) A) and E)

Question 12

Which of the following techniques reveal(s) the presence of fungal cells in tissues?

Accepted Answer

A)   Gram staining
B)   KOH treatment
C)   Gomori methenamine silver (GMS)  staining
D)   Gram staining combined with KOH treatment
E)   both KOH treatment and Gomori methenamine silver (GMS)  stainingF) D) and E)
G) None of the above

Question 13

The opportunistic infection known as (aspergillosis/cryptococcosis/sporotrichosis)may develop into a series of nodular,pus-filled lesions on a limb.

Accepted Answer

The answer of The opportunistic infection known as (aspergillosis/cryptococcosis/sporotrichosis)may develop...

Question 14

Which of the following is NOT a major contributor to opportunistic mycoses?

Accepted Answer

A)   an invasive medical procedure
B)   growth of fungus in food
C)   immunosuppressive therapy
D)   severe malnutrition
E)   chronic diseases like diabetesF) A) and B)
G) B) and D)

Question 15

Blastomyces dermatitidis occurs in the (eastern/central/southwestern/western)part of North America.

Accepted Answer

The answer of Blastomyces dermatitidis occurs in the (eastern/central/southwestern/western)part of...

Question 16

Fungi that cause systemic mycoses are uniformly acquired by ingesting contaminated food.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following statements about Malassezia is FALSE?

Accepted Answer

A)   It is part of the microbiota of the skin.
B)   It causes phaeohyphomycosis.
C)   It is a basidomycete.
D)   It causes pityriasis.
E)   It tends to develop into a chronic infection.F) A) and B)
G) A) and C)

Question 18

Clusters of budding yeast and branching pseudohyphae are consistent with (candidiasis/dermatophytosis/histoplasmosis).

Accepted Answer

The answer of Clusters of budding yeast and branching pseudohyphae...

Question 19

Systemic infections with fungus are difficult to treat because fungi are metabolically similar to humans,so antifungal therapies are sometimes complicated by side effects.

Accepted Answer

A) True 
 B)False

Question 20

The production of distinctively (smooth/bumpy/spiny)spores is diagnostic for Histoplasma capsulatum.

Accepted Answer

The answer of The production of distinctively (smooth/bumpy/spiny)spores is diagnostic...

Exam 22: Pathogenic Fungi

Blastomyces dermatitidis occurs in the (eastern/central/southwestern/western)part of North America.

Correct AnswerverifiedShow Answer

The opportunistic infection known as (aspergillosis/cryptococcosis/sporotrichosis)may develop into a series of nodular,pus-filled lesions on a limb.

Correct AnswerverifiedShow Answer

Aspergillus causes both mycoses and mycotoxicosis.

Correct AnswerverifiedShow Answer

Which of the following dermatophytes infects hair as well as skin?

Correct AnswerverifiedShow Answer

Histoplasma and Coccidioides produce tuberculosis-like damage to the lungs that can be seen on X-ray images.

Correct AnswerverifiedShow Answer

Vaccines to prevent fungal infection are widely available because attenuated strains are safe.

Correct AnswerverifiedShow Answer

The monomorphic fungus Rhizopus is a(n)

Correct AnswerverifiedShow Answer

Which of the following statements about Malassezia is FALSE?

Correct AnswerverifiedShow Answer

Which of the following techniques reveal(s) the presence of fungal cells in tissues?

Correct AnswerverifiedShow Answer

Fungi that cause systemic mycoses are uniformly acquired by ingesting contaminated food.

Correct AnswerverifiedShow Answer

The production of distinctively (smooth/bumpy/spiny)spores is diagnostic for Histoplasma capsulatum.

Correct AnswerverifiedShow Answer

Ringworm is caused by

Correct AnswerverifiedShow Answer

Compare and contrast dermatophytosis and pityriasis.

Correct AnswerverifiedBoth are noninvasive fungal infections o...View AnswerShow Answer

Clusters of budding yeast and branching pseudohyphae are consistent with (candidiasis/dermatophytosis/histoplasmosis).

Correct AnswerverifiedShow Answer

Which of the following is NOT a major contributor to opportunistic mycoses?

Correct AnswerverifiedShow Answer

Which of the following contributes to the pathogenesis of Cryptococcus neoformans?

Correct AnswerverifiedShow Answer

Systemic infections with fungus are difficult to treat because fungi are metabolically similar to humans,so antifungal therapies are sometimes complicated by side effects.

Correct AnswerverifiedShow Answer

The opportunistic pathogen ________ is metabolically and morphologically distinctive from other fungi and is not effectively treated with antifungal medications.

Correct AnswerverifiedShow Answer

Pityriasis,characterized by patches of hyperpigmented and depigmented skin on the trunk and arms,is due to cutaneous infection with

Correct AnswerverifiedShow Answer

Chronic low-level ingestion of ________ may cause liver cancer.

Correct AnswerverifiedShow Answer

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Both are noninvasive fungal infections o...
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