Question 1

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. 
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.

Question 2

Aspergillus causes both mycoses and mycotoxicosis.

Accepted Answer

A) True 
 B)False

Question 3

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 rubrum 
A)  Microsporum canis 
B)  Malassezia furfur 
C)  Fonsecaea pedrosoi 
D)  Epidermophyton floccosum 
E)  Trichophyton rubrum

Question 4

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 5

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. 
A)  Epidermophyton floccosum. 
B)  Cryptococcus neoformans. 
C)  Malassezia furfur. 
D)  Microsporum canis. 
E)  Trichophyton rubrum.

Question 6

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

Question 7

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

Question 8

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) staining 
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) staining

Question 9

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 10

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 capsule 
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 capsule

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

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 jirovecii 
A)  Candida albicans 
B)  Blastomyces dermatitidis 
C)  Aspergillus 
D)  Microsporum 
E)  Pneumocystis jirovecii

Question 13

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 14

Compare and contrast dermatophytosis and pityriasis.

Accepted Answer

Both are noninvasive fungal infections o

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

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 17

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

Accepted Answer

A)  aflatoxin 
B)  aspergillin 
C)  ergotamine 
D)  phalloidin 
E)  psilocybin 
A)  aflatoxin 
B)  aspergillin 
C)  ergotamine 
D)  phalloidin 
E)  psilocybin

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

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. 
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.

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

Which of the following statements about Malassezia is FALSE?

Aspergillus causes both mycoses and mycotoxicosis.

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

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

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

The monomorphic fungus Rhizopus is a(n)

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

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

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

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

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

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

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

Compare and contrast dermatophytosis and pityriasis.

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

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

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

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

Ringworm is caused by

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

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

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Microbial Genetics

Recombinant DNA Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

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Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Diseases, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram Positive Bacteria

Pathogenic Gram-Negative Cocci and Bacilli

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic DNA Viruses

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