Ecological Roles of Protists 21.3 http://www.bing.com/images/search?q=algae&qpvt=algae&FORM=IGRE#view=detail&id=1C5F87CADB61E1E2EBCD8CCEE5A76E44A11F45B3&selectedIndex=17

The position of photosynthetic protists at the base of the food chain makes much of the diversity of aquatic life possible

Roles p. 611 Feeding fish and whales Supporting coral reefs Providing shelter Recycling wastes POPCORN READ!

Heterotrophic protists Amoebas Capture and digest their food, surrounding a cell or particle and form a FOOD VACUOLE A small cavity in the cytoplasm that temporarily stores food

Ciliates Paramecium Use cilia to sweep food particles into the GULLET Indentation in one side of the organism

Slime Molds Thrives on decaying matter Damp and rich in organic matter (forest floor) Great recyclers What is a plasmodium (glossary)?

Protists that absorb Water molds (grow on dead/ decaying matter) White fuzz on fish 

Mutualists/ Symbiotic Many protists are involved in mutualistic symbioses; host and they benefit Use p. 614 and write an example like this in your notes

Parasites and Disease Parasitic protists are responsible for some of the world’s most deadly diseases, including several kinds of debilitating intestinal diseases, African sleeping sickness and malaria Read (p. 615-616) about each of the above three diseases and write down their symptoms Be able to interpret the Plasmodium life cycle on p. 616