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65 Cards in this Set

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What Yeast shows + germ tube test

Candida albicans; all others are negative

What colors are: C. albicans, glabrata and kruzei on CHROM agar?

What colors are C. tropicalis, Trichosporon beigelli, Cryptococcus neoformans on CHROM agar?

How are Zygomycetes classified?

Broad hyphae which are mainly nonseptate

Zygomycetes produce structures called _________ which have an asexual structure called a __________ that produce _____________.

Zygomycetes produce structures called sporangiophores which have an asexual structure called a sporangium that produce sporangiospores

Name the 3 Zygomycetes fungi.

1) Rhizopus sp.


2)Mucor sp.


3) Cunninghamella sp.

Name 6 Hyaline fungi.

1)Aspergillus niger


2)Aspergillus flavus


3)Aspergillus clavatus




4)penicillium spp


5)Fusarium spp


6)Scopulariopsis spp

How are Hyaline fungi different from Zygomycetes fungi?

Hyaline fungi have clear septate hyphae and Zygomycetes does not.

Aspergillus clavatus

Aspergillus flavus

Aspergillus niger

Mucor spp

Rhizopus spp.

Cunninghamella spp.

What are dermatiaceous fungi?

organisms that produce dark colonies due to pigmentation on their cell walls

Chromoblastomycosis is a dermatiaceous disease that causes what?

Chronic infection, forms schlerotic bodies. Cutaneous and subcutanous locations, however can spread to CNS, lungs and muscle

Phaehyphomycosis is a dermatiaceous disease that causes what?

cutaneous, subcutaneous or systemic infections

Mycetoma is a dermatiaceous disease that causes what?

Chronic, tumor-like lesions that are generally on hands/feet

How do dermatiaceous fungi enter the body?

Usually by traumatic implantation from environment to tissue

Alternaria spp.


Causes: phaeohyphomycosis

Cladosporium


Causes: chromoblastomycosis


Found in Australia, Venezuala and S. Africa

Phiolophora spp.


Causes: Chromoblastomycosis


Found in N. America


Rarely causes phaeohyphomycosis and mycetoma

Name 3 dermatiacious fungi

1)Alternaria spp.


2)Phiolophora spp.


3)Cladosporium spp.


Penicillium spp.


Causes: keratitis, UTI, respiratory and ear infections

Fusarium spp.


Causes: Mycotic eye infections, Mycetoma, sinusitis, skin and nail infections

Scopulariopsis spp.


Causes: tonail infections



What are the characteristics of the Dermatophyte fungi?

Dermatophytes are filamentous. They do not penetrate the skin, but grow by digesting the keratinized layor of the outside skin.

What are the 3 genera of dermatophytes?

1)Epidermophyton (no microconidia)(NOT IN LAB)


2)Microsporum (microconidia)


3)Trichophyton (microconidia)

Microsporum gypseum


Causes: ringworm in chickens, rarely in human scalp

Trichophyton rubrum


Causes: Most common dermatophyte to infect human skin and nails

Microsporum canis


Causes: infection of the scalp and skin in children and dogs/cats

Trichophyton mentagrophytes


Causes:Invades all parts of the body, common cause of athletes foot

Microsporum nanum


Causes: ringworm in pigs and rarely humans

Mucor spp.




(zygomycete)

Mucor Spp.




(Zygomycete)

Rhizopus spp.




(zygomycete)

Rhizopus sp.


(Zygomycete)

Cuninghamella spp.




(zygomycete)

Cuninghamella spp.




(zygomycete)

Aspergillus flavus

Aspergillus flavus

Aspergillus niger

Aspergillus niger




(Hyaline)

Aspergillus clavatus




(Hyaline)

Aspergillus clavatus




(Hyaline)

Alternaria




(Dematiaceous)

Alternaria




(Dematiaceous)

Penicillium spp.




(Hyaline)

Penicillium




(Hyaline)

Fusarium spp.




(Hyaline)

Fusarium spp.




(Hyaline)

Scapulariopsis spp.




(Hyaline)

Scapulariopsis spp.




(Hyaline)

Trichophyton mentagrophytes




(dermatophyte)

Trichophyton rubrum




(dermatophyte)

Trichophyton rubrum




(dermatophyte)

Microsporum gypseum




(dermatophyte)

Microsporon gypseum




(dermatophyte)

Microsporum nanum




(dermatophyte)

Microsporum nanum




(dermatophyte)

Microsporum canis




(dermatophyte)

Microsporum canis




(dermatophyte)

Aspergillus flavus

Cladosporium spp. (dermatiaceous)

Sunburst buff coat with middle orange button

phiolophora spp.