Block C 1 Flashcards

fungal cell biology

1
Q

most fungi are multicellular forming a network called

A

hyphae

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2
Q

hyphae that extend above the surface can produce asexual spores called

A

conidia

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3
Q

conidia are often what

A

pigmented and resistant to drying

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4
Q

what are the compacted tufts that hyphae called

A

mycelia

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5
Q

what are most fungal cell walls made of

A

chitin

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6
Q

what helps plant roots to obtain phosphorus

A

mycorrhizae

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7
Q

some fungi produce macroscopic reproductive structures called

A

fruiting bodies

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8
Q

2 examples of fruiting bodies

A

mushrooms and puffballs

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9
Q

what can mycoses in humans range from

A

athletes foot to histoplasmosis

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10
Q

how do most fungi reproduce and how many forms

A

asexual
3 forms

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11
Q

what are the 3 forms that fungi reproduce by

A

-growth and spread of hyphal filaments
-asexual reproduction of spores
-simple cell division

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12
Q

how do fungi sexual spores originate

A

fusion of 2 haploid cells to form a diploid cell
(ascospores, basidiospores, zygospores)

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13
Q

what are spores resistant to

A

drying
heating
freezing
chemicals

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14
Q

what is earliest fungal linage thought to be

A

chytridomycetes
global amphibian declines- chytrids

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15
Q

where are chytrids found

A

moist soil and freshwater

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16
Q

what has batrachochytrium been implicated in

A

massive die off of amphibians

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17
Q

key genera of chyriodiomycetes

A

allomyces
bactrachochytrium

18
Q

what are zygomycetes primarily known for

A

food spoilage

19
Q

where are zygomycetes commonly found

A

in soil and decaying plant material

20
Q

what are all zygomycetes

A

coenocytic
zygospores

21
Q

what are microsporidia

A

unicellular
obligate parasites

22
Q

what do microsporidia often infect

A

immune compromised individuals

23
Q

what is a representative form of zygospores

A

rhizopus stolonifer (black bread mould)
microsporidia

24
Q

what are glomermycetes

A

small group of fungi that have major ecological importance

25
Q

what do all species of glomermycetes form with the roots of herbaceous plants

A

endomycorrhizae

26
Q

what do arbuscular mycorrhiza do

A

help capture nutrients for plants

27
Q

how do all glomeromycetes reproduce

A

asexually

28
Q

key genera of ascomycetes

A

saccharomyces
candida
aspergillus

29
Q

diversity of ascomycetes

A

bakers yeast to common mould

30
Q

where are ascomycetes found

A

in aquatic and terrestrial environments

31
Q

what do ascomycetes do

A

decompose dead plant material
some are lichen symbionts

32
Q

shape of saccharomyces cerevisae

A

spherical to oval
cell division through budding

33
Q

what is the name given to the sexual reproduction that saccharomyces cerevisiae do

A

mating

34
Q

how many mating types do saccharomyces cerevisiae carry out

A

2

35
Q

what is the name given to the mechanism that switched ascomycete yeast from a to a

A

cassette

36
Q

reproduction mechanism of mushrooms and other basidiomycetes

A

vegetative and sexual

37
Q

key genera of mushrooms and other basidiomycetes

A

agaricus
amanita

38
Q

what type of growth do hyphals go through

A

exponential

39
Q

what is the spitzenkorper

A

structure found in fungal hyphae that is the organizing centre for hyphal growth and morphogenesis

40
Q

what is one of the most important groups for organisms for nutrient cycling

A

fungi

41
Q

what are fungi important for

A

biotechnologically and industrially important