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27 Cards in this Set
- Front
- Back
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Saprophytes like
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dead organic material to use as their food. fungi for example.
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Fungi are
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eurkaryotes, mostly multicellular, ERGOSTEROL cell membrane, glucan and chitin cell wall, heterotropic metabolism, aerobic respiration, asexual and sexual spores
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What do antifungals target?
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ergosterol cell membrane (not cholesterol, like in bacteria)
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Septate vs Non-septate?
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septate- crosswalls between nuclei
non-septate- no crosswalls between nuclei |
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Yeast
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unicellular, eukaryotic, reproduce asexually by budding
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Mold
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Multicellular, grow as long tubelike extensions of the cell wall (HYPHAE),
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Dimorphism
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ability for a fungus to grow as a yeast or a mold depending on environment. usually grow as yeast at 37 degrees and mold at 25 degrees. Better chance of living inside of us, so more pathogenic if it's dimorphic
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Asexual reproduction
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via mitosis as in budding (for yeasts)
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Major means of fungal identification
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spore morphology (asexual)
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Sexual reproduction
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cell fusion (mating), diploidy, meiosis. not methods of infection.
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Saprophytes like
|
dead organic material to use as their food. fungi for example.
|
|
|
Fungi are
|
eurkaryotes, mostly multicellular, ERGOSTEROL cell membrane, glucan and chitin cell wall, heterotropic metabolism, aerobic respiration, asexual and sexual spores
|
|
|
What do antifungals target?
|
ergosterol cell membrane (not cholesterol, like in bacteria)
|
|
|
Septate vs Non-septate?
|
septate- crosswalls between nuclei
non-septate- no crosswalls between nuclei |
|
|
Yeast
|
unicellular, eukaryotic, reproduce asexually by budding
|
|
|
Mold
|
Multicellular, grow as long tubelike extensions of the cell wall (HYPHAE),
|
|
|
Dimorphism
|
ability for a fungus to grow as a yeast or a mold depending on environment. usually grow as yeast at 37 degrees and mold at 25 degrees. Better chance of living inside of us, so more pathogenic if it's dimorphic
|
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Asexual reproduction
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via mitosis as in budding (for yeasts)
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Major means of fungal identification
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spore morphology (asexual)
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Sexual reproduction
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cell fusion (mating), diploidy, meiosis. not methods of infection.
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KOH
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quick dx; skin scraping
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woods lamp
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UV light, for hair
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superficial
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no cellular response
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cutaneous
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keratinized stratum corneum
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subcutaneous
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implantation
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systemic
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inherently virulent; need a lot of fungal spores
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opportunistic
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impaired host defenses
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