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Microbiology (PRCI) > Mycology > Flashcards

Mycology Flashcards

(74 cards)

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1
Q

Group of yeast that produce pseudohypha

A

Candida (except C. globrata)

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2
Q

Mold or Yeast:
Alcohol like odor

A

Yeast

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3
Q

Dimorphic fungi forms:
- body temp:
- room temp:

A

Yeast
Mold

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4
Q

Fungi that usually cause systemic mycoses

A

Dimorphic fungi

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5
Q

Unique at yeast form; not true thermally dimorphic fungi; hallmark of infection

A

Spherule

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6
Q

Group of fungi that has no sexual mode of reproduction

A

Fungi imperfecti

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7
Q

Spindle shaped conidia

A

Macroconidia

large, multicellular

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8
Q

Conidia that is formed during unfavorable conditions/ environment

A

Chlamydoconidia

(Terminal, intercalary, sessile)

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9
Q

Barrel shaped spores (rectangular)

A

Arthroconidia

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10
Q

Spores that possesses dysjunctor cells - gives checkered appearance

A

Arthroconidia

(with empty spaces)

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11
Q

Geotrichum

A

Hockey-stick appearance

(no empty spaces)

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12
Q

Fruiting bodies composed of asci

A

Ascocarps

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13
Q

Homothallic spores:
Heterothallic spores:

A

Zygospores
Oospores

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14
Q

Delays (storage)
Sterile specimen:
Non sterile specimen:

A

37C
4C

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15
Q

Antibiotic that can inhibit yeast phase of a dimorphic fungi

A

Chloramphenicol

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16
Q

Dermatophytes

Wood’s lamp:
POSITIVE -
NEGATIVE -

A

Microsporum (Ectothrix)
Trichophyton (Endothrix)

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17
Q

Agent added for too viscous respiratory specimens

A

NALC (N-acetyl-cysteine)

liquifying agent, digestant

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18
Q

Most common cause of fungemia (yeast, mold)

A

C. albicans
Fusarium (rare)

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19
Q

Anti-foaming agent for blood specimens using isolator tube

A

PEG (Polyethylene glycol)

Lysing agent - Saponin

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20
Q

Alternative for India Ink

A

Nigrosin

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21
Q

Mycotic infection features:
- spaghetti and meatballs
- bowling pin or medicine bottle

A

Tinea versicolor / Pityriasis Versicolor by Malassezia furfur

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22
Q

Scutula found in

A

T. favosa / Favus

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23
Q

Jock itch

A

T. cruris

Assoc w/ Epidermophyton floccosum

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24
Q

Athlete’s foot

A

T. pedis

Assoc with Epidermophyton floccosum

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25
Microsporum ectothrix infection pattern
Mosaic pattern
26
Beaked apex
M. canis *curved terminal ends* *M. gypseum / Nannizza gypsea - rounded terminal ends*
27
Lemon yellow / Bright yellow (reverse) colonies
M. canis
28
Tan/buff; cinnamon colonies
Nannizza gypsea (M. gypseum)
29
Cottony white; salmon colonies
M. audouinii
30
Microsporum Rice agar NEGATIVE
M. audouinii
31
Wood’s lamp negative microsporum
M. gypseum (Nannizzi gypsea)
32
Snow paddle macrosporida
E. floccosum
33
Khaki green; velvety colonies
E. floccosum
34
Cutaneous mycoses with no microconidia
Epidermophyton
35
Splendor hoeppli phenomenon seen in
Rose Gardener’s disease / Sporothricosis / Rose Handler’s Disease
36
Rose Gardener’s dusease: Mold form - Yeast form-
Mold form - Daisy-head / Flowerette conidia Yeast form - cigar-shaped
37
Biopsy findings in Rose Gardener’s dse
Asteroid bodies
38
Verrucoid nodunal Lesion
Lobomycosis / Keloidal blastomycosis
39
Staining technique for lobomycosis
GMS (Grocott Methenamine Silver)
40
Diagnostic fearure of chrommycosis
Sclerotic / Medlar bodies *copper penny*
41
Cauliflower-like lesions
Chromomycosis
42
Diagnostic feature of mycetoma or madura’s foot
Grains or granules
43
Mode of transmission of systemic mycoses
Inhalation of spores *Specimens: Respiratory; biopsy*
44
Exoantigen testing
For confirmatory of systemic mycoses *(+) = Specific A Band*
45
Mold form of Gilchrist’s dse
Lollipop conidia
46
Mariner’s wheel / Mickey mouse cap
Paracoccidiodomycosis
47
Exoantigen test result of Paracoccidiodomycosis
Band 1 , 2 ,3
48
Most virulent gent of mycotic infection
Coccidioides immitis
49
Exoantigens of San Joaquin valley fever / coccidioidmycosis
IDCF, HL, TP
50
Exoantigen of histoplasmosis / Darling’s disease
H and M
51
MOT of histoplasmosis
Inhalation of bat, bird guanos, chicken, starling droppings
52
Etiologic agents of opportunistic mycoses
Saphrophytic fungi
53
Used to differentiatw C. albicans to C. dublinensis
Incubation at 42C *C. albicans = (+) C. dublinensis = (-)*
54
Animal reservoir of C. neoformans
Pigeons
55
CALAS detects:
GXM Ag-glucuronoxylomannan
56
Aflatoxin B poisoning seen in
Aspergillosis; Fungus ball **A. Flavus**
57
Animal reservoir of talaromycosis
Bamboo rat
58
Honeycomb exudates
Pneumocystis pneumonia
59
Punched pingpong ball
Pneumocystis pneumonia
60
Lid lifters
Zygomycosis
61
Clearing time of 10% KOH
10mins **Heat** INCREASES rate of clearing
62
If spxn is highly keratinized, what is the concentration of KOH
20%
63
Excellent mounting medium for most fungi; most widely used stain
Lactophenol cotton blue (clearing agent, fungicide, stain)
64
Demonstrate encapsulated yeast
India ink
65
Hucker’s modification of Gram stain
Crystal violet and ammonium oxalate
66
Demonstrate melanin pigment
Masson Fontana
67
General purpose culture medium
Sabouraud Dextrose Agar
68
Dermatophyte test medium pH indicator: Dermatophytes:
Phenol red Red
69
Czapeck’s Agar
Aspergillus
70
Birdseed agar
Cryptococcus
71
Incubation temp for fungal diseases
Room temperature
72
Culture # of days before reporting as NEGATIVE
30days (4 weeks/28days)
73
Test to presumptively ID of C. albicans
Germ tube test
74
Rapid ID of C. Neoformans
L-DOPA Ferric citrate test

Microbiology (PRCI) (5 decks)

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