Intro to Fungi Flashcards

1
Q

What 4 things can fungi infect?

A
  • Plants
  • Insects
  • Amphibians
  • Mammals
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2
Q

Name of kingdom

A

Fungi

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3
Q

What is mycology?

A

Study of fungi

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4
Q

Define fungus

A

Chemo-organotrophic eukaryote that lacks chlorophyll and spores

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5
Q

What do fungi walls contain and what is the function?

A

Polysaccharides - absorb nutrients

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6
Q

What do fungi membranes contain?

A

Ergosterol

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7
Q

Describe a dermatophytic fungal infection

A

Moulds that degrade keratin as a nutrient source - produce ring shape on skin

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8
Q

Describe systemic fungal infections

A

Fungi that enter the body and affect the organs

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9
Q

What is opportunistic fungi

A

Fungi that causes diseases in individuals with compromised immune systems

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10
Q

What can candida and aspergillus cause in immunocompromised hosts?

A

Disseminated infections

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11
Q

What are the three mains types of fungi?

A
  • Basidiomycetes
  • Ascomycetes
  • Zygomycetes
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12
Q

What are they sexual and asexual spores in basidomycetes?

A
  • sexual: basidiospore

- asexual: conidium

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13
Q

What are they sexual and asexual spores in ascomycetes?

A
  • sexual: ascospore

- asexual: conidium

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14
Q

What are they sexual and asexual spores in zygomycetes?

A
  • sexual: zygospore

- asexual: sporangiospore

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15
Q

Define yeast

A

Fungi that favour unicellular habitats

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16
Q

Host factors that contribute to fungal infections

A
  • warm, moist environments - growth on skin and mucous membrane
  • Broad spectrum antibacterial agents reduce competition for colonisation in the gut
  • immunosuppressed patients
17
Q

Detection methods

A
  • Direct detection (histopathology)
  • Direct smear
  • Growth on selective medium