Lab 3: Protists

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Last updated 2:29 PM on 10/12/26
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22 Terms

1
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Eukaryotes

  • have more complex cells

  • membrane-bound organelles

  • membrane-bound nucleus

protists are “Earth’s first” eukaryotes


2
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Supergroup Excavata

  • unicellular flagellates

  • “excavata” (excavated) feeding groove on side of body


3
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Supergroup Excavata
Euglenida

  • photosynthetic green or heterotrophic colorless

  • have flagella to propel selves


<ul><li><p>photosynthetic green or heterotrophic colorless</p></li><li><p>have flagella to propel selves</p></li></ul><p></p>
4
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Supergroup Excavata

Kinetoplastids

  • heterotrophic parasites

  • cause African sleeping sickness


<ul><li><p>heterotrophic parasites</p></li><li><p>cause African sleeping sickness</p></li></ul><p></p>
5
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Supergroup Archaeplastida

  • algae (protists) but also plants (Kingdom Plantae)


6
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Supergroup Archaeplastida

Chlorophyta

green algae

  • volvox colonies


<p>green algae</p><ul><li><p>volvox colonies</p></li></ul><p></p>
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Supergroup Archaeplastida

Rhodophyta

red algae

  • no flagella, mostly marine, tetraspores, phycoerythrin


<p>red algae</p><ul><li><p>no flagella, mostly marine, tetraspores, phycoerythrin</p></li></ul><p></p>
8
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Supergroup Alveolata

  • unicellular organisms containing alveoli (saclike vesicles found at cell periphery)


9
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Supergroup Alveolata

Ciliophora

  • heterotophic

  • lots of cilia for moving and feeding


<ul><li><p>heterotophic</p></li><li><p>lots of cilia for moving and feeding</p></li></ul><p></p>
10
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Supergroup Alveolata

Apicomplexa

  • heterotrophic parasites (malaria) with apical complex to pierce host

    • apical complex on top (apex=on top)

  • internal parasites of animals


<ul><li><p>heterotrophic parasites (malaria) with apical complex to pierce host</p><ul><li><p>apical complex on top (apex=on top)</p></li></ul></li><li><p>internal parasites of animals</p></li></ul><p></p>
11
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Supergroup Alveolata

Dinoflagellates

  • photosynthetic or heterotrophic

  • thecate (armored): made of cellulose plates

  • athecate (unarmored)


<ul><li><p>photosynthetic or heterotrophic</p></li><li><p>thecate (armored): made of cellulose plates</p></li><li><p>athecate (unarmored)</p></li></ul><p></p>
12
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Supergroup Stramenopila

“straw hair” have lots of flagellar hairs to increase swimming efficiency by increasing surface area

13
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Supergroup Stramenopila

Bacillariophyceae (diatoms)

  • aquatic photosynthesizers (phytoplankton)

  • cell walls of silica (glass)


<ul><li><p>aquatic photosynthesizers (phytoplankton)</p></li><li><p>cell walls of silica (glass)</p></li></ul><p></p>
14
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Supergroup Stramenopila

Phaeophyceae (brown algae)

  • kelp

  • fucoxanthin gives color


<ul><li><p>kelp</p></li><li><p>fucoxanthin gives color</p></li></ul><p></p>
15
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Supergroup Stramenopila

Oomycota

  • fungus-like with filamentous hyphae

  • heterotrophic decomposers or parasites (caused potato famine)


16
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Supergroup Rhizaria

  • armored amoebas, move with filose pseudopodia


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Supergroup Rhizaria

Radiolaria

  • star-shaped zooplankton

  • made of silica (glass)


<ul><li><p>star-shaped zooplankton</p></li><li><p>made of silica (glass)</p></li></ul><p></p>
18
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Supergroup Rhizaria

Foraminifera

  • test (shell) made of calcium carbonate


<ul><li><p>test (shell) made of calcium carbonate</p></li></ul><p></p>
19
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Supergroup Amoebozoa

Naked amoebas

  • move with lobe or tube shaped pseudopodia

  • soil and aquatic habitats


<ul><li><p>move with lobe or tube shaped pseudopodia</p></li><li><p>soil and aquatic habitats</p></li></ul><p></p>
20
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Supergroup Amoebozoa

Slime molds

  • fungus-like with hyphae and fruiting bodies

  • feed on microorganisms living in dead plant


<ul><li><p>fungus-like with hyphae and fruiting bodies</p></li><li><p>feed on microorganisms living in dead plant</p></li></ul><p></p>
21
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Supergroup Opisthokonta

  • single posterior flagellum on swimming cells at some point in lifecycle

  • some protists but also Kingdom Animalia and Kingdom Fungi


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Supergroup Opisthokonta

Choanoflagelates

  • single flagellum surrounded by collar


<ul><li><p>single flagellum surrounded by collar</p></li></ul><p></p>