protista (amoeba)

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9 Terms

1
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cell membrane

keeps the cell contents together and allows for diffusion of substanes, does not provide rigid structure

2
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food vacuole

secretes acids and enzymes to kill and digest the ingested prey

3
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nucleus

contains genetic material and co-ordinates the cell activities

4
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pseudopodia

needed for movement and engulfing prey

  • ectoplasm moves out in the direction the amoeba wants to move

  • then the endoplasm flows into the pseudopodia

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contractile vacuole

needed for osmoregulation

  • water rushes in by osmosis in a less concentrated solute

  • excess water enters the contractile vacuole

  • contractile vacuole moves to the edge of the amoeba and expels the water

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is protista eukaryotic or prokaryotic

eukaryotic

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is protistas autotrophic or heterotrophic

heterotrophic

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is protista muti or uni cellular

unicellular

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examples of protistas

  • amoeba

  • algae

  • paramecium