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BI158L > Protists 2 > Flashcards

Protists 2 Flashcards

1
Q

What are amoabas, and what kingdom?

A

protozoan

Protista

unicellular

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2
Q

What are amoebas distinguished into>

A

animal-like protists

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3
Q

how does an amoeba move?

A

pseudopodia- stretching cytoplasm into finger-like extension

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4
Q

where do amoebas live?

A

ponds, puddles, and in larger organisms

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5
Q

What kind of cytoplasm do amoebas have?

A

ectoplasm- clear cytoplasm at the cell membrane

endoplasm- darker and denser

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6
Q

how do amoebas eat?

A

phagocytosis using psuedopodia into food vacuoles

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7
Q

what does the amoeba nucleaus do?

A

contain DNA

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8
Q

How do amoebas reproduce?

A

duplication and binary fission

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9
Q

what does the contractile vacuole do in amoeba?

A

pumps out water to prevent bursting

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10
Q

what is a cyst?

A

hard walled body formed by amoebas during unfavorable conditions

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11
Q

what disease can omeabas cause?

A

amebic dysentary, causing cramps and diahrrea

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12
Q

what is an Euglena?

A

unicellular

kingdom protista

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13
Q

where are euglenas found?

A

ponds and puddles

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14
Q

how does euglenas move?

A

by its flagellum acting like a motor,

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15
Q

where is the euglena flagellum attached to?

A

reservoir in the front end

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16
Q

how do euglenas feed?

A

autotrophic and heterotrophic

17
Q

what is an eye spot

A

organelle detecting light

18
Q

what is a pellicle?

A

stiff structure to keep shape of cell membrane

19
Q

how do euglenas reproduce?

A

asexually

20
Q

what is paramecium?

A

unicellular protozoan

phylum Ciliophora

kingdom protissta

21
Q

where is paramecium found?

A

quiet ponds

22
Q

what do paramacium eat?

A

microorganisms and algae

23
Q

what do Ciliophora have?

A

cilia

24
Q

Why can’t paramecium change shape?

A

pellicle is too stiff

25
Q

What does the macronucleus in parmecium do>

A

controls cell activities like respiration, protein synthesis, and digestion

26
Q

What does the micronulceus do in paramecium>

A

reproduction through conjugation and mitsosis

27
Q

how do paramecium get energy?

A

heterotrphy, consuming foods by sweeping into its pore

28
Q

where is food eliminated in paramecium?

A

anal pore

29
Q

what is paramecium’s defense mechanism?

A

using trichocytes (tiny threads) to enlarge or tangle threats

30
Q

what is avoidance behavior?

A

moving away from negatie stimulus

31
Q

what are volvox?

A

unicellular algae living in colonies of 500-20000 indivduals

32
Q

how do volvo move?

A

rolling green bolls using 2 flagella

33
Q

how do volvox feed?

A

using chlorophyll

34
Q

how do volvox reproduce?

A

sexually, forming daughter colony balls. parent bursts and releases these colonies

35
Q

how large are volvox?

A

350 to 500 um

BI158L (19 decks)

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