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Below is a quiz designed to test your knowledge when it comes to fungal infections. In recent times, we have come to learn that fungal infections invade the tissues on the skin and have the ability to even spread to the tissue, bones, organs, and even the whole body. Give it a try and get to see how much you know about these infections.
Questions and Answers
1.
Definition: Fungi that grow as either yeast or mold dependant on the temperature or environment.
A.
Hyphae
B.
Dimorphic fungi
C.
Saprophytes
D.
Spores
E.
Yeast
Correct Answer
B. DimorpHic fungi
Explanation Dimorphic fungi refers to fungi that have the ability to grow as either yeast or mold depending on the temperature or environment. This means that under certain conditions, these fungi can exist as single-celled yeast forms, while under other conditions, they can form multicellular filamentous structures called hyphae. The term "dimorphic" highlights the dual nature of these fungi and their ability to switch between two distinct growth forms. Therefore, dimorphic fungi is the correct answer in this context.
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2.
Fungi that live and uses organic matter like soil, rotten veggies as an energy source.
A.
Saprophytes
B.
Dimorphic Fungi
C.
Spore
D.
Yeast
E.
Mold
Correct Answer
A. SapropHytes
Explanation Saprophytes are organisms, such as fungi, that obtain their energy by decomposing dead organic matter. They play an important role in breaking down organic material and recycling nutrients back into the environment. In this case, the fungi described in the question are using soil and rotten veggies as their energy source, indicating that they are saprophytes.
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3.
Multicellular colonies composed of clumps of intertwined and branching hyphae.
A.
Hypae
B.
Dimorphic fungi
C.
Spores
D.
Yeast
E.
Mold
Correct Answer
E. Mold
Explanation The given description of multicellular colonies composed of clumps of intertwined and branching hyphae matches the characteristics of mold. Mold is a type of fungus that forms multicellular structures called hyphae, which are thread-like structures that intertwine and branch out. Mold colonies can be seen as clumps of these hyphae, making it the correct answer in this case.
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4.
Threadlike branching tubules composed of fungal cells attached to end beds.
A.
Dimorphic fungi
B.
Yeast
C.
Mold
D.
Hypae
E.
Spores
Correct Answer
D. Hypae
Explanation Hypae are threadlike branching tubules composed of fungal cells that are attached to end beds. They are a characteristic feature of fungi and play a crucial role in their growth and nutrient absorption. Hypae are responsible for the spread of fungi and the formation of mycelium, which is the vegetative part of the fungus. Therefore, the presence of hypae is a defining characteristic of fungi.
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5.
Reproducing bodies of mold.
A.
Spores
B.
Yeast
C.
Mold
D.
Saprophytes
E.
Dimorphic
Correct Answer
A. Spores
Explanation Spores are reproductive structures produced by mold. They are small, lightweight, and easily dispersed in the environment. When conditions are favorable, spores can germinate and give rise to new mold colonies. This process allows mold to reproduce and spread to new areas. Therefore, the correct answer is spores.
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6.
Unicellular growth of fungi can appear spherical to episodical. reproduce by budding, if they don't separate, form long chains of______ known as pseudohyphae.
A.
Spore
B.
Dimorphic
C.
Yeast
D.
Mold
E.
Saprophytes
Correct Answer
C. Yeast
Explanation Yeast is the correct answer because unicellular growth of fungi can appear spherical to episodical and reproduce by budding. If the buds do not separate, they can form long chains of cells known as pseudohyphae. Yeast is a type of fungus that exhibits this type of growth pattern.
Explanation The correct answer is that the 4 levels of fungal infections are superficial (skin), cutaneous (skin, hair, nails), subcutaneous, and systemic (blood).
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8.
What are the two superficial fungal infections and what can they both be treated with?
Correct Answer 1) Pityriasis versicolor : hyperpigmented patches that remain white after suntaning
2) Tinea nigra: Exophiala werneckii - painless patches on soles of hands and feet
can be treated with selenium sulfide
Explanation The two superficial fungal infections mentioned are Pityriasis versicolor and Tinea nigra. Pityriasis versicolor is characterized by hyperpigmented patches that remain white after suntanning, while Tinea nigra presents as painless patches on the soles of hands and feet caused by Exophiala werneckii. Both infections can be treated with selenium sulfide.
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9.
Name the enzyme present in cutaneous fungal infections that degrades skin, loss of hair, brittle nails.
Correct Answer keratinase
Explanation Keratinase is the enzyme present in cutaneous fungal infections that degrades skin, causing loss of hair and brittle nails. This enzyme breaks down keratin, which is a protein found in the outer layer of the skin, hair, and nails. When keratin is degraded by keratinase, it weakens the structure of these tissues, leading to various symptoms such as skin degradation, hair loss, and brittle nails.
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10.
Name the 5 Cutaneous fungal infections
Correct Answer 1) Tinea corpius( body) : looks like theres a ringworm under skin
2) Tinea capitis :( scalp) scadly red region, loss of hair
3) tinea pedius ( athletes foot) between the toes
4) Tinea cruris ( jock itch) scratchy red area between groin area
5) tinea ungium : nails are thickened, discolored, brittle: keep skin dry
Candiada Albican - infect mouth ( oral ) groin, and vagina
Explanation The correct answer lists the five common cutaneous fungal infections. Tinea corporis is a fungal infection that appears as a ringworm under the skin. Tinea capitis is a fungal infection on the scalp, characterized by scaly red regions and hair loss. Tinea pedis, also known as athlete's foot, occurs between the toes. Tinea cruris, or jock itch, causes a scratchy red area in the groin region. Tinea unguium affects the nails, causing them to become thickened, discolored, and brittle. Candida albicans is a fungal infection that can occur in the mouth, groin, and vagina.
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11.
Name the two subcutaneous fungal infection.
Correct Answer Sporothrix schenckii - causes sporotichotis - hazard for garderners, subcutaneou nodule becomes necrose and ulcerative
Phialophora and cladosporium : found in rotting wood, causes chromobiastomycosis , violent colored wartlike clusters of lesions - resemble califlower
Explanation The two subcutaneous fungal infections mentioned are sporotrichosis caused by Sporothrix schenckii and chromoblastomycosis caused by Phialophora and Cladosporium. Sporotrichosis is a hazard for gardeners and is characterized by the development of subcutaneous nodules that become necrotic and ulcerative. On the other hand, chromoblastomycosis is found in rotting wood and presents as violent colored wart-like clusters of lesions that resemble cauliflower.
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12.
Describe Histoplasma capsulatum.
Correct Answer Can be confused with TB, its a dimorphic fungi that grows as mycelial form, with spores at 25degrees on sabouraud;s agard. Dimorphic, in humans grow as yeast. Inhaled by spores, not transmitted person to person. Local infection in lung then blood stream.
Explanation Histoplasma capsulatum is a dimorphic fungi that can be mistaken for tuberculosis. It grows as a mycelial form with spores at 25 degrees on Sabouraud's agar. In humans, it grows as yeast. The infection occurs when the spores are inhaled and it is not transmitted from person to person. It initially causes a local infection in the lungs and can then spread to the bloodstream.
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13.
Describe Cryptococcus neoformans.
Correct Answer polysaccriade encapsulated yeast NOT dimorphic, inhaled into lungs, major manfestation is meningoencaphalitis, most cases in immunocompromised. (AIDS)
Explanation Cryptococcus neoformans is a type of yeast that is encapsulated and has a polysaccharide capsule. It is not dimorphic, meaning it does not have two distinct forms. The yeast is typically inhaled into the lungs and can cause a severe infection known as meningoencephalitis, which affects the membranes surrounding the brain and spinal cord. This infection is more commonly seen in individuals with weakened immune systems, particularly those with AIDS.
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14.
Describe Aspergillus flavus.
Correct Answer spores of this mold are everywhere , some develop type I hypersensitivity to it
Produces Aflaxin toxin- in peanuts, grains and rice.
Explanation Aspergillus flavus is a type of mold that can be found everywhere, as its spores are widely distributed. Some individuals may develop a type I hypersensitivity reaction when exposed to these spores. Additionally, this mold is known for producing Aflatoxin, a toxin commonly found in peanuts, grains, and rice.
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