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27 Cards in this Set
- Front
- Back
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What is the "n" form of fungal chromosomes?
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Haploid
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What two polysaccharides are found in fungal cell walls?
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a. Chitin
b. Glucan |
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How do yeasts reproduce?
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a. Blastoconidia-- budding
b. Pseudohyphae→ can look bacterial c. Germ tubes |
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How do molds reproduce?
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a. Mycelium
b. Hyphae |
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What is a coenocytic hypha? In what fungal form do they predominate?
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a. A hypha without septa
b. They predominate in molds |
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What are arthroconidia?
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a. Fragmented spores
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What are macroconidia?
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a. Large spores made up of several cells
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What are microconidia?
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a. Small spores made up of a single cell
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What characterizes a conidiospore?
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a. Free spores
b. Fruitful body→ “branches on a tree” |
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In what reproductive form is a teleomorph?
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a. Sexual
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In what reproductive form is an anamorph?
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a. Asexual
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What is the general process of fungal reproduction?
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a. In sexual stage, 2 haploid fungi fuse→ diploid stage→ haploid spores
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What is the weight of fungal ribosomes? How does that protect them?
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a. 80s ribosomes
b. They are resistant to prokaryotic antibiotics |
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What type of toxins are Ergot alkaloids? What do they lead to?
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a. Hallucingoens
b. St. Anthony’s fire |
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From what organism will you find an aflatoxin? Where will you find them?
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a. Aspergillus flavus
b. Carcinogens in grain and milk |
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From what organism will you get muscarine and its derivatives? What symptoms does it lead to?
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a. Amanita
b. GI distress c. Liver, kidney failure |
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From what organism will you get Pilzatropines? What type of symptoms does its toxin cause?
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a. Amanita
b. Flaccid paralysis, hallucinogens |
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Where are you going to find fusariogenin? What disease does it lead to?
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a. Fusarium on grain
b. Leukopenia |
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What is the process of initiating a type III hypersensitivity pulmonary disease?
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a. Inhalation of conidia with soluble surface antigens
b. Re-exposure to high doses of same antigen c. Formation of immune complexes in the alveolar wall |
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What is the most common type of type III hypersensitivity pulmonary disease?
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a. Bronchial asthma
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What are the presentations of Farmer's lung?
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a. Hypersensitivity pneumonitis
b. Interstitial lung disease→ from repeated inhalation of specific substance |
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What is byssinosis?
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a. It is a cotton fungus
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What is Pigeon fancier's disease?
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a. A disease caused by pigeon feces fungus
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What is the most efficient dye for visualization of fungi? How does it work?
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a. 10% KOH
b. Cleaves off fat |
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What is the most common dye used for positive fungal staining?
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a. Lactophenol cotton blue
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What is the most common dye used for negative fungal staining? In what medical procedure is it most often used?
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a. India ink
b. Used to identify yeast with a capsule in a lumbar puncture |
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What type of agar is used to culture fungi? What is its pH?
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a. Sabouraud’s dextrose agar
b. pH=5 |
