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What are two forms of mold?
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Which mold is free living?
saprophyte
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Where are saprophytes found?
breads and cheeses
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Which mold causes skin infx?
dermatophytes
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Molds are fungi that grow with _ hyphae.
aerial
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Molds appear _ on media.
fuzzy/fluffy/furry
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Molds grow by branching and produce _ bodies.
fruiting
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The fruiting body is the main reproductive part of mold. What does it produce?
spores
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Life cycle of mold:HG,FB/SF,S,SG
- hyphal growth
- fruiting body/spore formation
- spores
- spore germation
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What is derm-duet selcective for?MTE
- microsporum
- trichophyton
- epidermophyton
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What does microsporum cause?TTRO
- tinea capitis
- tinea corpus
- ring worm
- other dermatophytosis
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What does trichophyton cause?
dermatophytosis in hair, skin, and nails of humans
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What does epidermophyton cause?
superficial and cutaneous mycoses
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What is the most common mold media?
DTM
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What does DTM contain?
abx to inhibit growth of bacteria and most other media
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What is DTM selective for? MT
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With DTM how long does it take for a change in color?
72 hrs
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After DTM is labeled, inoculated, and incubated at room temp where is it stored?
somewhere dark
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Should the cap ever be tight on DTM?
no keep it loose
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What does a (+) dermatophyte (+) ringworm DTM look like?
- white-apricot fluffy growth
- media turns red
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What does a (+) saprophyte (-) ringworm DTM look like?
- black/brown/dark green growth
- no color change of media
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What are the two halves of a derm-duet?
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What does RSM stand for?
rapid sporulation media
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What is RSM selective for?ME
- microsporum
- epidermophyton
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How long is a derm-duet incubated at room temp?
10hrs max
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In a derm-duet how long does it take to get a (+) trichophyton red media color change?
3d
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How long does it take to get a (+) RSM? What color?
3-7d blue/green
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Purpose of derm-duet
detection and specification of dermatophytes
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