Protists!

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Protists!
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(No Transcript)
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General Characteristics

• eukaryotic cells contain membrane-bound nuclei
  and other membrane-bound organelles
• can have unicellular, colonial and multicellular
  forms
• important role at the bottom of the food chain
• reproduce via binary fission
• level of organization protoplasmic
• all functions of life are performed within
• the limits of a single plasma membrane

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Autotrophic v. Heterotrophic

• autotrophic converts inorganic compounds into
  an organic,
• usable form through
• photosynthetic processes
• Ex. Volvox, Euglena
• heterotrophic ingest large food particles and
  digest them intracellularly
• Ex. Amebas, Paramecium

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Amoeba (Ameba)
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Paramecium
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Volvox
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Euglena