General Information On Fungi

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| By Erika.anderson
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Erika.anderson
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Quizzes Created: 6 | Total Attempts: 9,935
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General Information On Fungi - Quiz

A few questions to review fungi.


Questions and Answers
  • 1. 

    Which of the following is not a part of fungi cell membrane/cell wall?

    • A.

      Ergosterol

    • B.

      Chitin

    • C.

      Peptidoglycan

    • D.

      Beta glucan

    • E.

      Mannan

    Correct Answer
    C. Peptidoglycan
    Explanation
    Peptidoglycan is not a part of the fungi cell membrane/cell wall. Peptidoglycan is a component found in the cell walls of bacteria, not fungi. Fungi have a unique cell wall structure that consists of chitin, beta glucan, and mannans. Ergosterol is a component of the fungi cell membrane and is important for maintaining the integrity and fluidity of the membrane.

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  • 2. 

    Cryptococcus is not encapsulated?

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Cryptococcus is encapsulated, meaning it is surrounded by a capsule made of polysaccharides. This capsule helps protect the fungus from the host's immune system, allowing it to cause infections in humans and animals. Therefore, the correct answer is False.

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  • 3. 

    Which of the following is a function of a germ tube?

    • A.

      Adherence

    • B.

      Reproduction

    • C.

      Penetration

    • D.

      A and C

    • E.

      All of the above

    Correct Answer
    D. A and C
    Explanation
    The germ tube is responsible for two main functions: adherence and penetration. Adherence refers to the ability of the germ tube to attach itself to a surface, allowing it to establish a foothold and begin colonization. Penetration, on the other hand, involves the germ tube's ability to invade and penetrate host tissues, enabling the pathogen to cause infection. Therefore, the correct answer is A and C, as both adherence and penetration are functions of a germ tube.

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  • 4. 

    Which of the following contains septate?

    • A.

      Rhizopus

    • B.

      Candida

    • C.

      Aspergillus

    • D.

      Mucor

    • E.

      Cryptococcus

    Correct Answer
    C. Aspergillus
    Explanation
    Aspergillus is the correct answer because it is a genus of fungi that contains septate hyphae. Septate hyphae are hyphae that are divided into compartments by cross-walls called septa. These compartments allow for the efficient distribution of nutrients and help in the reproductive process of the fungus. Other options like Rhizopus, Candida, Mucor, and Cryptococcus do not typically have septate hyphae.

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  • 5. 

    Which of the following is contain conidium?

    • A.

      Penicillin

    • B.

      Rhizopus

    • C.

      Aspergillus

    • D.

      A and C

    • E.

      All of the above

    Correct Answer
    D. A and C
    Explanation
    The correct answer is A and C, which means both Penicillin and Aspergillus contain conidia. Conidia are asexual spores produced by certain fungi, including Penicillium and Aspergillus. These spores are important for reproduction and dispersal in these fungi. Rhizopus, on the other hand, does not produce conidia but instead reproduces through the formation of sporangia.

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  • 6. 

    Which of the following is the result of arthrospores?

    • A.

      Jock Itch

    • B.

      Ring Worm

    • C.

      Athletes foot

    • D.

      A and C

    • E.

      All of the above

    Correct Answer
    E. All of the above
    Explanation
    Arthrospores are a type of fungal spores that can cause various skin infections. Jock Itch, Ring Worm, and Athlete's Foot are all common fungal infections that can be caused by arthrospores. Therefore, the correct answer is "All of the above."

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  • 7. 

    What is the purpose of Chlamydoconidia?

    • A.

      Penetration

    • B.

      Adhesion

    • C.

      Survival in adverse environments

    • D.

      Invasion

    • E.

      None of the above

    Correct Answer
    C. Survival in adverse environments
    Explanation
    Chlamydoconidia serve the purpose of survival in adverse environments. Chlamydoconidia are thick-walled, dormant structures formed by certain fungi and bacteria as a means of protection and survival during unfavorable conditions. These structures allow the organisms to withstand harsh conditions such as extreme temperatures, lack of nutrients, or exposure to toxins. By forming chlamydoconidia, the organisms can remain dormant until more favorable conditions arise, ensuring their survival in adverse environments.

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  • 8. 

    In who would you most likely find a fungal disease?

    • A.

      Elderly

    • B.

      Obese

    • C.

      Athlete

    • D.

      A and B

    • E.

      All of the above

    Correct Answer
    D. A and B
    Explanation
    Fungal diseases can affect anyone, but they are more commonly found in individuals who have weakened immune systems or underlying health conditions. Elderly individuals often have weaker immune systems, making them more susceptible to fungal infections. Obesity can also weaken the immune system and create a favorable environment for fungal growth. Therefore, both elderly and obese individuals are more likely to be affected by fungal diseases.

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  • 9. 

    Which of the following is NOT a virulance factor of Candida?

    • A.

      Lving in the gut of a healthy human

    • B.

      Extracellular enzymes

    • C.

      Form germ tubes

    • D.

      Adherence to tissue

    • E.

      Formation of hypae

    Correct Answer
    A. Lving in the gut of a healthy human
    Explanation
    The given answer, "Living in the gut of a healthy human," is not a virulence factor of Candida. Virulence factors are characteristics or traits possessed by a pathogen that enable it to cause disease. Living in the gut of a healthy human is a normal colonization of Candida and does not contribute to its ability to cause disease. The other options, such as extracellular enzymes, form germ tubes, adherence to tissue, and formation of hyphae, are all virulence factors that enhance the pathogenicity of Candida.

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  • 10. 

    Most fungi are anaerobes.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Fungi are mostly aerobic organisms, meaning they require oxygen to survive and grow. While there are some fungi that can tolerate low levels of oxygen or even survive in anaerobic conditions, the statement that "most fungi are anaerobes" is incorrect. Therefore, the correct answer is False.

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  • 11. 

    Which of the following is a common media to grow fungi?

    • A.

      Antibiotic Agar

    • B.

      Sabouraud's Agar

    • C.

      Potato Dextrose Agar

    • D.

      A and C

    • E.

      B and C

    Correct Answer
    E. B and C
    Explanation
    Sabouraud's Agar and Potato Dextrose Agar are both common media used to grow fungi. Sabouraud's Agar is a selective medium that inhibits the growth of bacteria while promoting the growth of fungi. It contains a high concentration of dextrose, which provides a favorable environment for fungal growth. Potato Dextrose Agar is a general-purpose medium that is also used for cultivating fungi. It contains potato extract and dextrose, which provide nutrients for fungal growth. Therefore, the correct answer is B and C.

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  • 12. 

    Which of the following is NOT a target for antifungals?

    • A.

      The Mitochondria

    • B.

      Sterols

    • C.

      Cell wall

    • D.

      Nucleic acid and protein synthesis

    • E.

      Mitotic spindle formation

    Correct Answer
    A. The Mitochondria
    Explanation
    Antifungals are drugs used to treat fungal infections by targeting specific components of the fungal cells. The mitochondria, which are responsible for energy production in cells, are not a target for antifungals. Antifungals primarily target sterols, such as ergosterol, which are essential for maintaining the integrity of the fungal cell membrane. They also target the cell wall, which provides structural support to the cell. Additionally, antifungals inhibit nucleic acid and protein synthesis, as well as disrupt mitotic spindle formation, which is necessary for cell division. Therefore, the mitochondria is not a target for antifungals.

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