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Bacteriology I > Fungi: Introduction > Flashcards

Fungi: Introduction Flashcards

1
Q

What are the 2 forms of fungi?

A

Yeast form
Mold form

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2
Q

Pathogenic yeasts reproduce by _________. Molds reproduce by _________.

A

budding
sporulation

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3
Q

When pathogenic yeasts reproduce, they form _______.

A

blastospores

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4
Q

Term for branched, elongated form of yeast.

A

pseudohyphae

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5
Q

_______ yeasts reproduce by sporulation.

A

fission

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6
Q

______ form of fungi are multicellular and filamentous while ______ form are mononucleated and single cellular.

A

mold
yeast

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7
Q

Molds have tubular, branching, multinucleated, filamentous structures called ______.

A

hyphae

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8
Q

Match the descriptor term of mold hyphae characteristics:

  1. cross walls present
  2. few or no cross walls
  3. intertwined hyphae masses
A
  1. septate
  2. aseptate
  3. mycelium
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9
Q

(T/F) Sporulation only occurs asexually.

A

False

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10
Q

(Asexual/sexual) sporulation occurs via nuclear fission.

A

sexual

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11
Q

A _______ is a fungus in a sexually reproductive/sporulation state.

A

telemorph

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12
Q

_______ is a fungus in a state of asexual reproduction/sporulation.

A

anamorph

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13
Q

(Anamorph/Telomorph) is in the majority of fungal lesions.

A

anamorph

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14
Q

What are the asexual spores called produced by hyphae?

A

conidia

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15
Q

Match the 3 types of Conidia with each description:

  1. asexual spores produced by segmentation of hyphae
  2. asexual spores produced by budding yeast
  3. large, thick-walled asexual spores formed by differentiation of hyphae
A
  1. arthrospores
  2. blastospores
  3. chlamydospores
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16
Q

(T/F) Fungi can be monomorphic or dimorphic, depending on how many forms they can grow into.

A

True

17
Q

Dimorphic fungi can be either ________-dependent or ________-dependent.

A

temperature
nutrient

18
Q

What kind of fungi invade hair and vegetative hyphae grow in the hair shaft?

A

dermatophytes

19
Q

Dermatophyte diseased state where arthrospores form on the surface of the hair shaft.

A

ectothrix

20
Q

Dermatophyte diseased state where arthrospores form on the inside of hair shaft.

A

endothrix

21
Q

Dermatophyte diseased state where arthrospores form on both sides of the hair shaft.

A

ecto-endothrix

22
Q

Term for dark brown or black fungi.

A

dematiaceous

23
Q

Term for “spiny” walls of some conidia.

A

echinulate

24
Q

Within the cell wall of fungi, ______ are D-glucose residues and ______ are N-acetyl glucosamine residues.

A

glucan
chitin

25
Q

What fungal plasma membrane structure is a target for anti-fungal treatments?

A

ergosterol

26
Q

(T/F) Subcutaneous fungal infections are a secondary infection from indirect contact with fungi.

A

False - caused by direct implantation

27
Q

Term for subcutaneous granulomatous abscess which spreads to nearby tissues caused by fungal infection.

A

mycetoma

28
Q

Term for a mycetoma with granules in pus.

A

maduromycosis

29
Q

Systemic fungal infections are caused by spore ________.

A

inhalation

30
Q

(T/F) Systemic fungal infection is contagious to nearby animals.

A

False

31
Q

Term for intoxication that occurs from ingestion of fungal metabolites in food products.

A

mycotoxicosis

32
Q

What base media is used to culture fungi for diagnosis?

A

sabouraud’s dextrose agar

33
Q

What pH is Sabouraud’s Dextrose Agar? Why?

A

5.6
inhibits bacterial growth

34
Q

What two CC mediums are used to inhibit nonpathogenic fungi and bacteria when culturing fungi for diagnosis?

A

cycloheximide
chloramphenicol

35
Q

What serology test is most common in diagnosing fungal infections?

A

complement-fixation

Bacteriology I (15 decks)

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