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Do Now: Do you think there will be anything different in your ponds?

Do Now: Do you think there will be anything different in your ponds?. January 6,2009 Page 33 Hmk- Get Cell Quiz SIGNED. Protists. Are considered eukaryotes - organisms that have cells with nuclei. Can be unicellular or multicellular.

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Do Now: Do you think there will be anything different in your ponds?

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  1. Do Now: Do you think there will be anything different in your ponds? January 6,2009 Page 33 Hmk- Get Cell Quiz SIGNED

  2. Protists • Are considered eukaryotes - organisms that have cells with nuclei. • Can be unicellular or multicellular. • Some are autotrophs (make own food) or heterotrophs (consume other organisms) • 3 categories - animal-like protists, funguslike protists and plantlike protists.

  3. Animal-like Protists • Pseudopods - temporary bulge of the cell membrane that fills with cytoplasm • Help protozoa to move in response to change in environment. • Help to trap food.

  4. Contractile vacuole - collects extra water and expels it from the cell. • Cilia - hairlike projections from cells that move with a wavelike pattern. • Used to move, obtain food, and sense the environment.

  5. Flagella - whiplike structure that helps the protist move.

  6. Plantlike Protists • Commonly called algae. • Algae is an autotroph.

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