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Chapter 7 Section 1
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What is a Protist? Eukaryotes, (have nuclei) Live in moist surroundings. Most are unicellular, but some are multicellular. Some are heterotrophs, some are autotrophs, and a couple are both.
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Grouping Protists Three categories: animal-like fungus like plantlike
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Animal-like Protists also called protozoans are heterotrophs. Most can move from place to place to get food.
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Animal-like Protists Many protozoans that live in fresh water have contractile vacuoles.
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Animal-like Protists Four types: sarcodines ciliates, flagellates sporozoans
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Animal-like Protists Sarcodines move and feed by using pseudopods. Pseudopods are temporary bulges of the cell membrane that fill with cytoplasm.
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Animal-like Protists Ciliates are covered with hairlike projections called cilia. They use cilia to move, obtain food, and sense the environment.
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Animal-like Protists Zooflagellates move using whiplike flagella.
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Animal-like Protists Sporozoans are parasites that feed on their hosts’ cells and body fluids. Plasmodia attacking RBC
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Funguslike Protists heterotrophs, have cell walls use spores to reproduce. Unlike fungi, all funguslike protists are able to move at some point in their lives. Dog vomit slime mold
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Funguslike Protists The three types: water molds downy mildews slime molds. Slime mold fruiting bodies
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Plantlike Protists Plantlike protists are called algae. autotrophs variety of colors because they contain many types of pigments—chemicals that produce color.
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Plantlike Protists - Euglenoids Euglenoids can become heterotrophic when sunlight is not available.
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Plantlike Protists - Dinoflagellates covered by stiff plates move using two flagella. beautiful, glasslike cell walls.
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Plantlike Protists - Algae Green algae live in fresh water, salt water, and moist places on land. Red algae and brown algae live in the oceans.
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Brown Algae
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