protists Flashcards

(66 cards)

1
Q

protists

A

eukaryotic not classified in plant, animal, or fungi kingdoms

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2
Q

are protists closely related to plants, animals, and fungi

A

yes

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3
Q

algae:

A

photoautotrophs

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4
Q

protozoa

A

heterotrophic

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5
Q

fungus-like

A

resemble fungi in form and use absorptive nutrition

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6
Q

habitats of protists:

A

wet places

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7
Q

plankton

A

swimming or floating protists/bacteria/viruses

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8
Q

periphyton:

A

attached to the cell wall to underwater surface, produce multicellular bodies

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9
Q

endosymbiosis

A

host cell captures bacteria by phagotrophy, bacteria does something like bioluminescence

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10
Q

endosymbosis is the evolutionary basis of what

A

plastids

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11
Q

how do protists swim?

A

using flagella

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12
Q

amoeboid movement

A

using pseudopodia

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13
Q

how else do protists move?

A

gliding on slime

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14
Q

Excavata are related to

A

some of Earth’s earliest eukaryotes

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15
Q

why are excavata named?

A

for a feeding groove excavated into many cells

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16
Q

how do excavata eat?

A

food particles by phagotrophy

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17
Q

endocytosis

A

engulfing cells of organisms

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18
Q

endocytosis is the basis for what?

A

endosymbosis

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19
Q

excavata have what kind of mitochondria?

A

highly modified

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20
Q

can excavata photosynthesis?

A

some can

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21
Q

Plants and relatives include

A

land plants and algae

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22
Q

red algae

A

most are multicellular macro algae

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23
Q

why is red algae red?

A

due to photosynthetic pigments

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24
Q

do red algae have flagella?

A

no

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25
Chlorophyta
diverse in structure
26
where do chlorophyta occur
in fresh and salt water, and on land
27
does red algae and chlorophyta have complex life cycles?
yes
28
Plastids:
enclosing surrounded by two membranes
29
how did plastids come to be
primary symbiosis
30
plastids resulted in what
horizontal gene transfer from endosymbiot to host
31
Secondary plastids:
derived from photosynthetic eukaryote
32
where did secondary plastids originate?
from secondary endosymbiosis
33
how does secondary plastids work?
eukaryotic host cell ingests and keeps another cell that already has primary plastids
34
how many envelopes do secondary plastids have
more than two
35
how did endosymbiosis probably come to be?
host captured cyanobacteria, the cyanobacteria helped host photosynthesis
36
cryptomads are
unicellular flagellates
37
what color are cryptomads plastids
red, blue, or brown from secondary photosynthesis
38
Haptophytes
unicellular photosynthesis with secondary plastids
39
Supergroup Alevolta
named for membrane bound vesicles
40
dinozoa
some photosynthesis, some don't
41
Tertiary endosymbiosis
half of dinoflagellates are heterotrophic, others can photosynthesis from 2nd or 3rd endosymbiosis
42
Stramenopila have a wide range of...
algae, protozoa, and fungus
43
stramenopila produce what
flagellated cells at some point
44
why is stramenopila named
for strawlike hairs
45
are stramenopila heterotrophic or photosynthetic
both
46
Rhizaria are
thin, strawlike hair extensions of cytoplasm
47
Amoebozoa
many types of amoeboe use pseudopodia to move
48
Opisthokonta includes
animals and fungi related to protists
49
what is opisthokonta named for
singular posterior flagellum
50
choanoflagellate protists
feature a collar surrounding flagella
51
phagotrophy
heterotrophs that ingest particles
52
osmotrophy
heterotrophs that rely on uptake of small organic particles
53
photoautotrophy
photosynthesis
54
mixotrophy
able to use all 3
55
Extrusomes
spear shaped particles to discourage herbivores
56
bioluminesence:
startles herbivores
57
toxins
disrupt physological functions
58
slimy mucilage
defend against herbivores and pathogens
59
eukaryotes use what to reproduce
gametes and zygotes
60
why are gametes and zygotes adaptive?
due to its diversity
61
Haploid dominant:
most unicellular reproducing protists, haploid develops into a gamete, thick walled diploid zygote
62
Alterations of generations:
many types of multicellular organisms, haploids = gametes, diploid = spores, by meiosis, all cells but gametes are diploid
63
Ciliate reproduction
most complex sexual process
64
macronuclei
source of info + cell production
65
conjugation
cells pair and fuse
66
parasitic protists use...
more than one host, different stages