Question 1

Which of the following provides information about the nature and potential cause of a fungal infection the most quickly?

Accepted Answer

A) culture on Sabouraud's dextrose agar 
B) testing for temperature dimorphism 
C) direct examination of fresh specimens (wet mounts, KOH preps, brighteners) 
D) culture on selective and differential media 
A) culture on Sabouraud's dextrose agar 
B) testing for temperature dimorphism 
C) direct examination of fresh specimens (wet mounts, KOH preps, brighteners) 
D) culture on selective and differential media

Question 2

The cell-mediated immune response appears to play a more significant role in antifungal defenses than does the antibody-mediated immune response.

Accepted Answer

A) True 
 B)False

Question 3

The terms used for the four general types of fungal infection include the following, except

Accepted Answer

A) cutaneous. 
B) blood-borne. 
C) systemic. 
D) subcutaneous. 
E) superficial. 
A) cutaneous. 
B) blood-borne. 
C) systemic. 
D) subcutaneous. 
E) superficial.

Question 4

Microsporum, Trichophyton, and Epidermophyton

Accepted Answer

A) produce tissue-damaging mycotoxins. 
B) all cause athlete's foot. 
C) have reservoirs that include humans, animals, and soils. 
D) frequently cause septicemia. 
E) are dimorphic fungi. 
A) produce tissue-damaging mycotoxins. 
B) all cause athlete's foot. 
C) have reservoirs that include humans, animals, and soils. 
D) frequently cause septicemia. 
E) are dimorphic fungi.

Question 5

Fungi that exhibit thermal dimorphism grow as _____ at 30°C and as _____ at 37°C.

Accepted Answer

molds; hyp

Question 6

Diseases caused by fungi are termed _____.

Accepted Answer

The answer of Diseases caused by fungi are termed _____....

Question 7

This organism commonly contaminates grains, corn, and peanuts and produces a potent mycotoxin called aflatoxin?

Accepted Answer

A) Pneumocystis (carinii) jiroveci 
B) Fusarium species 
C) Rhizopus species 
D) Geotrichum candidum 
E) Aspergillus flavus 
A) Pneumocystis (carinii) jiroveci 
B) Fusarium species 
C) Rhizopus species 
D) Geotrichum candidum 
E) Aspergillus flavus

Question 8

Which of the following appears to play the least significant role in antifungal defenses in humans?

Accepted Answer

A) phagocytosis 
B) IgG antibodies 
C) cell-mediated immunity 
D) inflammatory response 
A) phagocytosis 
B) IgG antibodies 
C) cell-mediated immunity 
D) inflammatory response

Question 9

Which of the following are likely to predispose patients to fungal infections?

Accepted Answer

A) cancer 
B) AIDS 
C) tuberculosis 
D) malnutrition 
E) All of these choices are correct. 
A) cancer 
B) AIDS 
C) tuberculosis 
D) malnutrition 
E) All of these choices are correct.

Question 10

Paracoccidioides is

Accepted Answer

A) a superficial mycosis. 
B) endemic to regions of Central and South America. 
C) only seen in immunocompromised patients. 
D) also known as valley fever. 
E) All of these choices are correct. 
A) a superficial mycosis. 
B) endemic to regions of Central and South America. 
C) only seen in immunocompromised patients. 
D) also known as valley fever. 
E) All of these choices are correct.

Question 11

Which is incorrect about tinea versicolor?

Accepted Answer

A) It is a superficial mycosis. 
B) It is often transmitted by fomites. 
C) It is caused by the yeast Malassezia furfur. 
D) It causes disruption of skin pigmentation resulting in a mottled appearance. 
E) It occasionally causes systemic infections in compromised patients. 
A) It is a superficial mycosis. 
B) It is often transmitted by fomites. 
C) It is caused by the yeast Malassezia furfur. 
D) It causes disruption of skin pigmentation resulting in a mottled appearance. 
E) It occasionally causes systemic infections in compromised patients.

Question 12

Skin testing with antigen is used to diagnose ringworm.

Accepted Answer

A) True 
 B)False

Question 13

Discuss why the use of broad-spectrum oral antimicrobics often lead to oral thrush and vulvovaginal candidiasis superinfections.

Accepted Answer

The use of broad-spectrum oral antimicro

Question 14

Trichophyton species infect hair, skin, and nails, whereas Microsporum species infect hair and skin but not nails.

Accepted Answer

A) True 
 B)False

Question 15

Dermatophyte spores can survive for years on fomites.

Accepted Answer

A) True 
 B)False

Question 16

Most mycoses are not communicable.

Accepted Answer

A) True 
 B)False

Question 17

Rhizopus, Absidia, and Mucor are mold genera that cause the disease called _____.

Accepted Answer

The answer of Rhizopus, Absidia, and Mucor are mold genera...

Question 18

A 42-year-old male construction worker in southern Arizona developed a cold-like illness, experiencing a chronic cough, chest pain, headaches, and general fatigue.When the symptoms did not abate after several weeks, he visited his physician who ordered microscopic examination and culture of his sputum specimen.Direct microscopic exam demonstrated the presence of large spherule structures full of endsospores.The specimen was cultured at both 25°C and 37°C.The plate incubated at 25°C grew tan colonies with a fluffy white center.Examination of these colonies microscopically showed branching septate hyphae.As the culture matured, the hyphae fragmented into arthrospores.What is the most likely diagnosis?

Accepted Answer

A) candidiasis 
B) coccidioidomycosis 
C) blastomycosis 
D) histoplasmosis 
E) sporotrichosis 
A) candidiasis 
B) coccidioidomycosis 
C) blastomycosis 
D) histoplasmosis 
E) sporotrichosis

Question 19

Which is mismatched?

Accepted Answer

A) Tinea capitis - ringworm of the beard 
B) Tinea pedis - ringworm of the foot 
C) Tinea cruis - ringworm of the groin 
D) Tinea corporis - ringworm of the body 
E) Tinea unguium - ringworm of the nails 
A) Tinea capitis - ringworm of the beard 
B) Tinea pedis - ringworm of the foot 
C) Tinea cruis - ringworm of the groin 
D) Tinea corporis - ringworm of the body 
E) Tinea unguium - ringworm of the nails

Question 20

Characteristics of Histoplasma capsulatum include

Accepted Answer

A) it grows in moist soil, rich in nitrogen from bird and bat guano. 
B) it is a yeast with a capsule. 
C) it is a dermatophyte. 
D) it grows in dry, arid soil. 
A) it grows in moist soil, rich in nitrogen from bird and bat guano. 
B) it is a yeast with a capsule. 
C) it is a dermatophyte. 
D) it grows in dry, arid soil.

Exam 22: The Fungi of Medical Importance

Which of the following provides information about the nature and potential cause of a fungal infection the most quickly?

The cell-mediated immune response appears to play a more significant role in antifungal defenses than does the antibody-mediated immune response.

The terms used for the four general types of fungal infection include the following, except

Microsporum, Trichophyton, and Epidermophyton

Fungi that exhibit thermal dimorphism grow as _____ at 30°C and as _____ at 37°C.

Diseases caused by fungi are termed _____.

This organism commonly contaminates grains, corn, and peanuts and produces a potent mycotoxin called aflatoxin?

Which of the following appears to play the least significant role in antifungal defenses in humans?

Which of the following are likely to predispose patients to fungal infections?

Paracoccidioides is

Which is incorrect about tinea versicolor?

Skin testing with antigen is used to diagnose ringworm.

Discuss why the use of broad-spectrum oral antimicrobics often lead to oral thrush and vulvovaginal candidiasis superinfections.

Trichophyton species infect hair, skin, and nails, whereas Microsporum species infect hair and skin but not nails.

Dermatophyte spores can survive for years on fomites.

Most mycoses are not communicable.

Rhizopus, Absidia, and Mucor are mold genera that cause the disease called _____.

Which is mismatched?

Characteristics of Histoplasma capsulatum include

The Main Themes of Microbiology

The Chemistry of Biology

Tools of the Laboratory: Methods of Studying Microorganisms

A Survey of Prokaryotic Cells and Microorganisms

A Survey of Eukaryotic Cells and Microorganisms

An Introduction to Viruses

Microbial Nutrition, Ecology, and Growth

An Introduction to Microbial Metabolism: the Chemical Crossroads of Life

Microbial Genetics

Genetic Engineering: a Revolution in Molecular Biology

Physical and Chemical Agents for Microbial Control

Drugs, Microbes, Host--The Elements of Chemotherapy

Microbe-Human Interactions: Infection and Disease

An Introduction to Host Defenses and Innate Immunities

Adaptive, Specific Immunity and Immunization

Disorders in Immunity

Procedures for Identifying Pathogens and Diagnosing Infections

The Gram-Positive and Gram-Negative Cocci of Medical Importance

The Gram-Positive Bacilli of Medical Importance

The Gram-Negative Bacilli of Medical Importance

Miscellaneous Bacterial Agents of Disease

The Parasites of Medical Importance

Introduction to Viruses That Infect Humans: the Dna Viruses

The Rna Viruses That Infect Humans

Environmental Microbiology

Applied and Industrial Microbiology

Filters

Fungi that exhibit thermal dimorphism grow as _ at 30°C and as _ at 37°C.