Medical Mycology and Fungal Diseases Quiz
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Questions and Answers

What is the study of mycoses of man and their etiologic agents called?

  • Parasitology
  • Mycology (correct)
  • Entomology
  • Phycology
  • Which of the following is NOT a property of the kingdom of Fungi?

  • Saprophytic and Parasitic
  • Produce spores
  • Eukaryotic
  • Contain chlorophyll (correct)
  • What polysaccharides are present in the cell wall of fungi?

  • Starch and B-glucan
  • Chitin and cellulose
  • Chitin and B-glucan (correct)
  • Cellulose and starch
  • Which component of the cell membrane is a site of action of some antifungal drugs?

    <p>Ergosterol</p> Signup and view all the answers

    What is the primary reason for the increasing fungal infections in humans?

    <p>AIDS and other immunosuppressant conditions</p> Signup and view all the answers

    Which classification method can be used for fungi based on their growth forms?

    <p>Morphological and ecological classification</p> Signup and view all the answers

    What is the characteristic reproduction method of yeast?

    <p>Budding</p> Signup and view all the answers

    Which type of fungi is known for forming branching tubular filaments called hyphae?

    <p>Filamentous fungi (Molds)</p> Signup and view all the answers

    What is the characteristic feature of dimorphic fungi?

    <p>They occur in two forms: yeast form and filamentous form</p> Signup and view all the answers

    Which fungal species is commonly found in soil and pigeon feces, and can initially infect the lung and brain?

    <p>Creptococcus neoformans</p> Signup and view all the answers

    Which fungal infection is characterized by rapidly fatal outcomes in immune-compromised hosts?

    <p>Fungal infection (mycoses)</p> Signup and view all the answers

    What kind of allergic manifestations can be produced by inhaled spores and volatile fungal toxins?

    <p>Asthmatic reaction and eosinophilia</p> Signup and view all the answers

    Which toxic compounds are produced by certain strains of fungi and can lead to poisoning condition if ingested?

    <p>Aflatoxins</p> Signup and view all the answers

    Which type of fungal infection is a growing threat to human health, especially to immune-compromised patients?

    <p>Fungal infection (mycoses)</p> Signup and view all the answers

    Which compound, produced by aflatoxins under favorable conditions, is potent carcinogenic and induce mutation in the p53 human suppressor gene?

    <p>Aflatoxin B1</p> Signup and view all the answers

    What role do inhaled spores and volatile fungal toxins play in producing allergic manifestations?

    <p>They may trigger asthmatic reaction and eosinophilia</p> Signup and view all the answers

    What is the role of ergosterol in fungi?

    <p>It is a site of action of some antifungal drugs</p> Signup and view all the answers

    What is the primary reason for the increasing fungal infections in humans?

    <p>AIDS and other immunosuppressant conditions</p> Signup and view all the answers

    What characteristic feature sets yeast apart in terms of reproduction?

    <p>Asexual reproduction only</p> Signup and view all the answers

    Which toxic compounds are produced by certain strains of fungi and can lead to poisoning condition if ingested?

    <p>Aflatoxins</p> Signup and view all the answers

    Which component of the cell membrane is a site of action of some antifungal drugs?

    <p>Ergosterol</p> Signup and view all the answers

    Which classification method can be used for fungi based on their growth forms?

    <p>Morphological classification</p> Signup and view all the answers

    Which fungus is known to commonly infect the lung and brain initially, and is found in soil and pigeon feces?

    <p>Cryptococcus neoformans</p> Signup and view all the answers

    What type of fungi forms branching tubular filaments called hyphae?

    <p>Zygomycetes</p> Signup and view all the answers

    Which fungal infection is characterized by rapidly fatal outcomes in immune-compromised hosts?

    <p>Fungal infection (mycoses)</p> Signup and view all the answers

    What is the characteristic reproduction method of yeast?

    <p>Reproduce by budding</p> Signup and view all the answers

    Which type of fungi occur in two forms: yeast form in tissues or when grown at 37°C, and filamentous form when grown at 22°C?

    <p>Histoplasma capsulatum</p> Signup and view all the answers

    What is the mycelium?

    <p>Mass of branching, interlinking hyphae</p> Signup and view all the answers

    Which toxic compounds, produced by certain strains of fungi, can lead to poisoning condition if ingested?

    <p>Aflatoxins</p> Signup and view all the answers

    Aflatoxin B1 induces mutation in which human suppressor gene, leading to loss of growth control in hepatocytes?

    Signup and view all the answers

    Which species of fungi is known to cause multisystem infections such as meningitis, arthritis, and respiratory infections?

    <p>Cryptococcus neoformans</p> Signup and view all the answers

    Study Notes

    Fungal Infections

    • The study of mycoses of man and their etiologic agents is called medical mycology.
    • The property that is NOT characteristic of the kingdom of Fungi is mobility.
    • The cell wall of fungi contains polysaccharides such as chitin and glucans.
    • Ergosterol is a component of the cell membrane and is a site of action of some antifungal drugs.
    • The primary reason for the increasing fungal infections in humans is the growing number of immune-compromised patients.
    • Fungi can be classified based on their growth forms, such as yeast or mold.

    Characteristics of Fungi

    • Yeast is characterized by its ability to reproduce by budding.
    • Fungi that form branching tubular filaments called hyphae are known as molds.
    • Dimorphic fungi occur in two forms: yeast form in tissues or when grown at 37°C, and filamentous form when grown at 22°C.
    • Mycelium is the vegetative part of the fungus, consisting of a mass of branching hyphae.

    Fungal Infections and Toxins

    • Histoplasma capsulatum is a fungal species commonly found in soil and pigeon feces, and can initially infect the lung and brain.
    • Cryptococcal meningitis is a fungal infection characterized by rapidly fatal outcomes in immune-compromised hosts.
    • Inhaled spores and volatile fungal toxins can produce allergic manifestations such as asthma and allergic rhinitis.
    • Certain strains of fungi can produce toxic compounds such as aflatoxins, which can lead to poisoning if ingested.
    • Aflatoxin B1 is a potent carcinogen that can induce mutation in the p53 human suppressor gene.

    Fungal Threats

    • Invasive aspergillosis is a type of fungal infection that is a growing threat to human health, especially in immune-compromised patients.
    • Fungal infections are a growing threat to human health, especially in patients with compromised immune systems.

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    Description

    Test your knowledge of medical mycology, the study of fungal diseases in humans. Explore the properties of fungi, their role in causing diseases, and the history of understanding fungal invasion of human tissue.

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