Textbook Question
Which of the following is not used to identify true fungal pathogens?
a. Growth at 25°C and 37°C to show dimorphism
b. GMS staining of infected tissues
c. Serological testing
d. Clinical symptoms alone
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Ch. 22 - Pathogenic Fungi
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 22, Problem 3
Indicate whether each statement is true or false. If the statement is false, change the underlined word or phrase to make the statement true.
_____ Dermatophytoses are always contracted from the environment.
Verified step by step guidance1
Understand the term 'Dermatophytoses': These are fungal infections caused by dermatophytes, which affect keratinized tissues such as skin, hair, and nails.
Recall the common sources of dermatophyte infections: They can be transmitted from the environment (soil), animals, or humans.
Analyze the statement: 'Dermatophytoses are always contracted from the environment.' The word 'always' implies exclusivity to the environment as the source.
Determine if the statement is true or false: Since dermatophytoses can also be transmitted from animals and humans, the statement is false.
Correct the statement by replacing 'environment' with 'environment, animals, or humans' to make it true.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Dermatophytoses
Dermatophytoses are fungal infections caused by dermatophytes, which infect keratinized tissues like skin, hair, and nails. These fungi thrive on keratin and cause conditions such as ringworm and athlete's foot.
Modes of Transmission of Dermatophytes
Dermatophytes can be transmitted through direct contact with infected humans, animals, or contaminated objects, not just from the environment. Understanding these transmission routes is key to identifying infection sources.
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Environmental Reservoirs vs. Host-to-Host Transmission
While some dermatophytes exist in the environment (soil), many infections result from human-to-human or animal-to-human contact. Differentiating between environmental and host reservoirs helps clarify infection pathways.
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Related Practice
Textbook Question
Discuss why it is difficult in many cases to determine the source of superficial fungal infections (i.e., from other humans, animals, or the environment).
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Textbook Question
AIDS patients usually die of bacterial, fungal, or microsporidial infections. Why do so many fungal infections appear in these individuals, and why are mycoses severe while fungi, for the most part, are benign residents of the environment?
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Textbook Question
Of the following fungi, which is usually transmitted from person to person?
a. Blastomyces dermatitidis
b. Coccidioides immitis
c. Tricophyton rubrum
d. Aspergillus fumigatus
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Textbook Question
Given that superficial fungal infections are only on the surface, why is it necessary to even try to identify the source of infection?
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Textbook Question
Many antifungal agents target the compound _____ in fungal cytoplasmic membranes.
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