MYCOVIRO - Chapter 59 Flashcards Preview

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Flashcards in MYCOVIRO - Chapter 59 Deck (45)
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1

always unicellular

protozoa

2

may be unicellular or multicellular

fungi
algae

3

always multicellular

helminths (have unicellular egg or larval forms)

4

outermost boundary that comes into direct contact with the environment

Glycocalyx

5

glycocalyx usually composed of

polysaccharides

6

Appears as a network of fibers, a slime layer, or a capsule

The Glycocalyx

7

functions of glycocalyx

Protection
Adhesion
Reception of signals

8

The layer beneath the glycocalyx varies among eukaryotes
Fungi and most algae (Describe cell wall)

thick, rigid cell wall

9

The layer beneath the glycocalyx varies among eukaryotes
protozoa and animal cells (Describe cell wall)

do not have this cell wall

10

Rigid
Provide support and shape
Different chemically from prokaryotic cell walls

cell wall

11

cell wall function

Provide support and shape

12

fungi cell wall inner layer (Describe)

Thick, inner layer of chitin or cellulose

13

fungi cell wall outer layer (Describe)

Thin outer layer of mixed glycans

14

cell wall of this organism is Varied in chemical composition

algae

15

composition of algae cell wall (4)

May contain cellulose, pectin, mannans, and minerals

16

Bilayer of phospholipids with protein molecules embedded

Cytoplasmic Membrane

17

Cytoplasmic Membrane
contains __

sterols

18

component of cytoplasmic membrane
Gives stability
Especially important in cells without a cell wall

sterol

19

Some scattered in the cytoplasm and cytoskeleton
Others associated with RER

ribosomes

20

Composed of large and small subunits of ribonucleoprotein

ribosomes

21

2 types of microscopic fungi

yeast and mold

22

types of microscopic fungi
Round oval shape
Unique mode of asexual reproduction

yeast

23

types of microscopic fungi
Long, threadlike cells

mold

24

General method of obtaining nutrition
(4)

Penetrates the substrate
Secretes enzymes
Breaks down the enzymes into small molecules
Absorbs the molecules

25

the woven, intertwining mass of hyphae that makes up the body or colony of a mold

Mycelium-

26

Unique organizational features of hyphae
divide the hyphae in to segments (most fungi- septate hyphae)

Septa

27

Unique organizational features of hyphae
one long, continuous cell

Nonseptate hyphae-

28

visible mass of growth on the substrate surface; penetrates the substrate to digest and absorb nutrients

Vegetative hyphae (mycelia)-

29

from vegetative hyphae; responsible for the production of spores

Reproductive (fertile) hyphae-

30

functions of hyphae

vegetative and reproductive

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