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Bio 1000 > Lecture 13 Protists > Flashcards

Lecture 13 Protists Flashcards

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Biology 101 flashcards
1
Q

Domain Eukarya

A

Have nucleus, organelles, unicellular or multicellular

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2
Q

Domain Archea

A

Unicellular (all)
Extremophiles

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3
Q

Domain Bacteria

A

all unicellular
includes pathogens
ancestors to mitochondria + chloroplasts

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4
Q

Endosymbiosis

A

ancestral archean + Aerobic bacterium
heterotrophic bacterium + photosynthetic
Photosynthetic eukaryotes

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5
Q

Protist Diversity: cells and nutrient

A

Mostly unicellular- Some colonial and multicellular
nutrition: photoautotrophs
heterotrphs
mixotrophs

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6
Q

Nutrition

A

Photoautotrophs: sunlight to make sugars
Heterotrophs: absorb/ingest food
MIxotrophs: do both

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7
Q

Protist ecological diversity

A

Mostly aquatic can be terrestrial (damp soil)

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8
Q

Win-win symbiotic Relationship

A

mutually beneficial
photosynthetic protist + coral
termites + heterotrophic protist

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9
Q

Win- loose symbiotic relationships

A

that causes malane

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10
Q

Decomposers

A

Orgs that eat dead organic matter
nutrient recyclers

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11
Q

Producers

A

organisms that does photosynthesis
-form base of food webs, eaten by consumers

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12
Q

PSN %

A

30% of al PSN = protists
20% of all PSN = bacteria
50 % of all PSN = plants

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13
Q

Primary Endosymbiosis

A

Prokaryote + Prok= euk
1) early heterotrophic eukaryote engulfed a photosynthetic bacterium
2) early PSN eukaryote
3) diverged to give red + green algae (differ in PSN pigments)

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14
Q

Algae

A

PSN protist

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15
Q

Secondary endosymbiosis

A

heterotrophic eukaryote engulfing a PSn eukaryote
euk + euk = euk

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16
Q

How many super groups are there in Protist

A

4

17
Q

Protist Diversity Parameters

A

of cells: unicellular or multicellular
nutrition: heterotrophic, autotrophic, Mixotrophic
Motile: capable of movement (clilia, falgella , pseudopods) vs sessile

18
Q

Protist Diversity

A

Exacavates, SAR, Archeaplastida, Unikonts

19
Q

Giardia instestinalis (excavata)

A

Unicellular
heterotrophic
motile flagella
Ecological importance: parasites, mammal small intestine
interesting features : 2 distinct forms ( 1 active 2- dormant)

20
Q

Euglena (excavata )

A

of cells: unicellular
mixotrophic, pigement= chlorophyll
Motile: yes, flagella
ecological importance: producers in fresh/salt water
interesting features : eye spot detects light

21
Q

Diatoms (Sar)

A

of cells: unicellular
mode of nutrition: autotrophs, glass-like cell wall, pigments= chlorophyll
Motile: yes, “glide” don’t swim
Ecological importance: most abundant PSN orgs in oceans and lakes
interesting features : store excess sugar as oil droplets

22
Q

Brown Algae (SAR)

A

of cells: multicellular

Mode of nutrition: autotrophs, cell wall= cellulose, pigments- chlorophylls
Motile= sessile
ecological importance: thrive in cold water, create ecosystem

22
Q

Dinoflagellates (SAR)

A

of cells: unicellular
mode of nutrition: any all, cell wall = cellulose, pigments= chlorophyll
Motile: flagella (2)
ecological importance: phytoplankton , over abundance = red algae
interesting features : some capable of bioluminescence

23
Q

Red Algae (archeaplastida)

A

of cells: multicellular
made of nutrition: autotrophic, cell-wall=cellulose
motile: NO
Ecological importance: Baswe of food chain/web
interesting features : Japanese “nori”

24
Q

Green Algae (archeaplastida)

A

of cells: either (uni & multi)
made of nutrition: autotrophs
Motile: generally, no but volvox =flagella
Ecological importance: base of food chain fresh or marine
interesting features: colony = 500-60,000
volvox can reporduce sexually or aesexually

25
Q

Amoeba (unikonta)

A

of cell : unicellular

mode of nutrition: heterotrophic= parasites +predators
Motile: yes–> pseudopods
ecological importance: nutrient recycling: water /soil/ sir decomposers
interesting features: engulf prey via phagocytosis

26
Q

Plasmodial slime molds ( unikonta)

A

of cells: unicellular with multiple nuclei
Mode of nutrition: heterotrophs
motile: pseudopods
ecological importance: soil decomposers
interesting features: intelligent , capable of solving mazes

Bio 1000 (17 decks)

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