Unit 4 - Fungi General Flashcards

1
Q

Are fungi prokaryotes or eukaryotes?

A

eukaryotes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Do fungi have mitochondria?

A

yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How do fungi multiply?

A

by both binary fission and sexual means

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the wall of fungi made up of?

A

they contain chitin, chitosan, mannans, and glucans

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Do fungi contain sterols?

A

yes - usally ergosterol and zymosterol and not cholesterol as in mammalian cell membranes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Are fungi susceptible to antibiotics?

A

they are not susceptible to classical antibiotics but are susceptible to polyene antibiotics which are active against erosterol and zymosterol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

True or False: All fungi lack the stem and leaf structure of highly organized plants.

A

true - note that not every fungus will adhere to these rules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

True or False: Fungi can manufacture their own food

A

false - they do not have chlorophyll therefore they cannot manufacture their own food

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Fungi are either ______, ______, or _______. (type of organism they are)

A

saprophytic, symbiotic, or parasitic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are fungi primarily identified by?

A

gross and microscopic visual means (i.e. the color of the colonies and the size, arrangement, and structure of their spores and reproductive structures)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the two different forms that fungi is seen in?

A

yeasts and molds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Yeasts are the _____ form of fungi.

A

simplest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the morphology of yeasts?

A

they are round or oval and single celled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How does yeast reproduce?

A

via budding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are pseudohyphae?

A

chains of yeast cells that elongate and look like filaments or hyphae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How do molds reproduce?

A

by spores

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What do molds do on suitable substrate?

A

The spores elarge somewhat, germinate, and send out a germ tube. The germ tube elongates to form a hypha and forms long filaments. They branch and may or may not form septa which divide the hyphae into uninucleated or multinucleated cells.

18
Q

What is it called when septae of mold do not form the hyphae?

A

coenocytic

19
Q

What type of hyphae form as part of the mycelium?

A

vegetative, aerial, and reproductive

20
Q

Where are vegetative hyphae located?

A

they penetrate down into the medium

21
Q

Where are aerial hyphae located?

A

above the medium

22
Q

What does the reproductive hyphae develop from?

A

the aerial hyphae

23
Q

What are dimorphic fungi?

A

fungi that have both a yeast phase and a mold phase

24
Q

What seems to be the more common mode of reproduction in fungi?

A

asexual reproduction

25
How do fungi asexually reproduce?
budding and the formation of a variety of spore types
26
What does sexual reproduction in fungi involve?
the union of gametes
27
What is the perfect state?
the sexually reproductive form of fungi
28
What is the imperfect state?
the asexual state of fungi
29
What is the name of the kindgom for fungi?
Mycetae
30
What are the two groups within Mycetae?
Aseptate mycelia and sepate mycelia
31
What class belongs to Aseptate mycelia?
Phycomycetes or Zygomycetes
32
What classes belong in septae mycelia?
Ascomycota, Basidiomycota, and Deuteromycetes
33
What does Ascomycota get its name from?
the formation of a sexual stage called the ascus
34
What is within the ascus?
a number of ascospores
35
What is Basidiomycota comprised of?
the mushrooms, toadstools, smits, and rusts of plants
36
What important pathogen exists in the class Basidiomycota?
Filobasidiella neoformans
37
What is another name for the class Deuteromycetes?
fungi imperfecti
38
What organisms belong in the class Deuteromycetes?
those for which a sexual stage has not been found
39
What is the standard media used for growth of fungi?
Sabouraud's Glucose Agar (SGA)
40
What is special media used for with fungi?
to produce identifying structures or characteristics
41
What is the ideal temperature for fungi growth?
some grow well at 22 C and others at 37 C