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MYCOLOGY > Mycology Part 1 > Flashcards

Mycology Part 1 Flashcards

1
Q

Sac-like structure containing usually 8 ascospores

A

Ascus

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2
Q

developed during sexual production in the class Ascomycetes

A

Ascus

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3
Q

reproductive bodies of a fungus

A

spores

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4
Q

spores are formed directly from _ or _

A

vegetative mycelium or specialized hyphae

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5
Q

_ is a subcutaneous mycosis often the result of traumatic inoculation of a _ fungus into the skin; etiologic agents include species of _, _, _, and _

A

Chromoblastomycosis
Dematiaceous
Cladosporium, Fonsecaea, Exophiala, and Phialophora

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6
Q

A cell or an aseptate hypha with numerous nuclei

A

Coenocytic

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7
Q

A specialized branch of hypha on which conidia are developed

A

Conidiophores

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8
Q

pigmented, dark in color, usually gray or black

A

dematiaceous

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9
Q

fungi that causes superficial mycoses

A

dermatophyte

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10
Q

ability of some fungi to grow as either yeast or filamentous stages, depending on conditions of growth

A

Diphasic or Dimorphic

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11
Q

ability of fungus to grow outside of a hair shaft

A

ectothrix

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12
Q

ability of fungus to grow and penetrate into hair shaft

A

endothrix

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13
Q

derived from internal source

A

endogenous

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14
Q

derived from external source

A

exogenous

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15
Q

organisms possessing a true nucleus such as fungi

A

eukaryotes

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16
Q

organisms that do not contain a nuclear membrane such as bacteria

A

prokaryotes

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17
Q

fungal blood infection

A

fungemia

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18
Q

large class of fungi with septate hyphae in which the asexual state of reproduction is known but not the sexual state

A

fungi imperfecti

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19
Q

fungi imperfecti are also called _

A

deuteromycetes

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20
Q

_ include majority of the medically significant fungi

A

fungi imperfecti or deutoromycetes

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21
Q

small projections which arise from cells of certain yeasts, indicates the onset of hyphal formation

A

germ tube

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22
Q

colorless, clear

A

hyaline

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23
Q

term generally referring to filamentous fungi

A

mold

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24
Q

Mycetoma is a clinical syndrome of _, _ lesions in the _ and _ tissues due to infections, often a foot, with _ or fungi

A

localized, tumorous lesions
cutaneous and subcutaneous tissues
actinomycetes

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25
Q

a disease caused by a fungus

A

mycosis

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26
Q

toxins of fungal origin

A

mycotoxins

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27
Q

oospore is also called _ , a sexual spore produced trough the fusion of two (A) like (B) unlike nuclei. (Class _)

A

zygospore
unlike
Phycomycetes

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28
Q

fungi having sexual and asexual reproductive stages

A

Perfect fungi

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29
Q

_ a class of fungi forming a coenocytic mycelium with stiff sporangiospores contained in a _

A

phycomycetes

sporangium

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30
Q

Phycomycetes is a class of fungi forming a _ _ with _ _ contained in a sporangium

A

coenocytic mycelium

stiff sporangiospores

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31
Q

A chain of elongated budding cells that have failed to detach

A

pseudohyphae

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32
Q

no true hyphae

A

pseudohyphae

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33
Q

_ is a term used to describe circular or ring-like lesions produced by _

A

ringworm

dermatophytes

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34
Q

root-like structures

A

rhizoids

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35
Q

any plant organism that obtains its nourishment from dead organic matter

A

Saprobe (saprophyte)

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36
Q

sexual reproduction - _ or_ formation follows the fusion of (A) one (B) two haploid nuclei

A

zygote or spore

two

37
Q

A special aerial hypha or stalk bearing a sporangium

A

Sporangiosphore

38
Q

sporangiosphore is a _ _ _ or _ _ a _

A

special aerial hypha

stalk bearing a sporangium

39
Q

a sac or cell containing spores produced asexually

A

sporangium

40
Q

occasionally, a resistant body for adverse environment

A

spore

41
Q

a specialized structure that arises from a basidium and supports basidiospores

A

Sterigmata

42
Q

sterigmata is a specialized structure that arises from a _ and supports _

A

basidium

basidiospores

43
Q

mycosis that results from an inoculation with Sporothrix schenckii, lymphocutaneous type is most common

A

Sporotrichosis

44
Q

Sporotrichosis is a mycosis that results from an inoculation with _ _, and the most common type is _

A

Sporothrix schenckii

lymphocutaneous

45
Q

sexual form of fungus

A

Telemorph

46
Q

spore formed by a change in portions of the thallus

A

Thallospore

47
Q

prefix used with the infected are of the body to indicate a cutaneous mycosis

A

Tinea (ringworm)

48
Q

pasty or mucoid form of fungus growth, microscopically shows predominance of budding cells

A

yeast

49
Q

yeast is a _ or _ form of fungus growth, microscopically shows predominance of _ _

A

pasty or mucoid form

budding cells

50
Q

Are dermatophytes which are parasitic on lower animals as well as man

A

zoophilic

51
Q

Fungal Structure:

Are long, branching filaments that come together to form the mycelium

A

Hyphae

52
Q

Fungal Structure:

The two main types of hypae

A

Septate and Sparsely sepatate (aseptate)

53
Q

Type of hyphae that have cellular separation or cross walls

A

Septate hyphae

54
Q

Type of hyphae that range in diameter of 3 to 6 um

A

septate hyphae

55
Q

Type of hyphae that range in diameter of 5 to 15 um

A

sparsely septate (aseptate) hyphae

56
Q

Type of hyphae that contain few or if any cellular separations

A

sparsely septate (aseptate) hyphae

57
Q

Also refers to hyphae lacking cross walls

A

Coenocytic

58
Q

Fungal Structure:

How does pseudohyphae differ from true hyphae (3 answers)

A

(1) are constricted at the septa
(2) form branches that begin with septation
(3) have terminal cells smaller than other cells

59
Q

Fungal Structure:

(2) Classification of Hyphae

A

Vegetative and Aerial hyphae

60
Q

Classification of Hyphae:

Function in food absorption

A

Vegetative hyphae

61
Q

Classification of Hyphae:

Function is to support reproductive structures called conidia

A

Aerial hyphae

62
Q

Classification of Hyphae:

the portion that extends below the agar surface or nutrient substrate

A

vegetative hyphae

63
Q

Classification of Hyphae:

the portion that extends above the agar surface or nutrient substrate

A

aerial hyphae

64
Q

Fungal structure:

_ are sporelike asexual reproductive structures not produced by cleavage, conjugation, or free-cell formation and are only formed by _ _

A

Conidia

imperfect fungi

65
Q

Conidia morphology is important in _ _

A

fungal identification

66
Q

Conidia classification is based on _ _ _

A

Conidia morphologic development

67
Q

Are single-celled, small conidia

A

Microconidia

68
Q

Are multicellular, large conidia

A

Macroconidia

69
Q

What are the types of conidia (6)

A

Arthroconidia, Blastoconidia, Chlamydoconidia, Poroconidia, Phialoconidia, Anelloconidia

70
Q

Type of Conidia:

Are conidia resulting from the fragmentation of hyphae into individual cells. Some fungi will have this type of conidia separated by normal ( _ ) cells

A

Arthroconidia

71
Q

Type of Conidia:

Are conidia that form as the result of budding

A

Blastoconidia

72
Q

Type of Conidia:

Result from terminal cells in the hyphae that enlarge and have thick walls.

A

Chlamydoconidia

73
Q

Type of Conidia:

That can survive adverse environmental conditions

A

Chlamydoconidia

74
Q

Type of Conidia:

Are found in molds

A

Chlamydoconidia

75
Q

Similar structures of Chlamydoconidia called _ that are found in hyphae produced by some cells

A

Chlamydospores

76
Q

Type of Conidia:

Formed by being pushed through a small pore in the parent cell

A

Poroconidia

77
Q

Type of Conidia:

Are tube-shaped conidia that can be branched

A

Phialoconidia

78
Q

Type of Conidia:

Are vase-shaped conidia

A

Anelloconidia

79
Q

Anelloconidia, the remaining parent outer cell wall takes on what appearance as the conidia are released

A

Saw-toothed appearance

80
Q

Sexual and Asexual Reproduction:

The production that requires the formation of specialized fungal structures called spores

A

Sexual Reproduction

81
Q

Sexual and Asexual Reproduction:

Fungi that undergo sexual reproduction are termed as _ _

A

Perfect fungi

82
Q

Sexual and Asexual Reproduction:

Only involves division of nucleus and cytoplasm

A

Asexual reproduction

83
Q

Sexual and Asexual Reproduction:

Fungi that undergo asexual reproduction are termed as _ _ and the only fungal group to produce conidia

A

Imperfect Fungi

84
Q

Sexual Reproduction:

4 types of spores

A

Ascospores, Basidiospores, Oospores, Zygospores

85
Q

Type or spores:

Are spores contained in a sac-like structure

A

Ascospores

86
Q

Type or spores:

Are spores contained in a club-shaped structure

A

Basidiospore

87
Q

Type or spores:

Are spores resulting from the fusion of cells from two different hyphae

A

Oospores

88
Q

Type or spores:

Are spores resulting from the fusion of two identical hyphae

A

Zygospores

MYCOLOGY (1 decks)

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