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Kingdom Protista

Objectives 4.03 & 4.04: Disease-causing microorganisms & Parasites. Kingdom Protista. What is a Protist ?. Protists are eukaryotic organisms The kingdom Protista is the most diverse kingdom Some are microscopic while others are large.

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Kingdom Protista

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  1. Objectives 4.03 & 4.04: Disease-causing microorganisms & Parasites Kingdom Protista

  2. What is a Protist? • Protists are eukaryotic organisms • The kingdom Protista is the most diverse kingdom • Some are microscopic while others are large. • Some are unicellular while others are multicellular • Some are autotrophic while others are heterotrophic.

  3. 3 Main Groups • Animal-Like Protists(Protozoans): Paramecium & Amoebas • Plant-Like Protists: Algae • Fungus-Like Protists: Water Molds/Slime Molds

  4. Animal-Like Protists • They are similar to animals in the following ways: • No cell wall • No chloroplasts, which makes them heterotrophs • They are different than animals in the following ways: • They are unicellular whereas animals are multicellular. • Examples: Paramecium & Amoebas

  5. Paramecium Amoeba

  6. Plasmodium • Animal-Like protist that causes malaria. • Mosquito bites a person infected with malaria. • The plasmodium enters the mosquito and reproduces in the gut of the mosquito. • Plasmodium enters mosquito’s salivary glands. • Infects the next person the mosquito bites!

  7. Plasmodia & Malaria

  8. Plant-Like Protists • They are similar to plants in the following ways: • Have cell wall • Have chloroplasts, which makes them autotrophs • They are different than plants in the following ways: • They are motile (can move) • Their cell walls are made of chitin, where plant cells walls are made of cellulose • They have no roots, stems, or leaves • Examples: Algae & Euglena

  9. Algae Euglena

  10. Fungus-Like Protists • Fungus-Like Protists • They are similar to fungi in the following ways: • Decompose organic material, which makes them heterotrophs • They are different than fungi in the following ways: • Are motile • Have cell walls made of cellulose, where fungi have cell walls made of chitin. • Examples: Slime molds, water molds

  11. Slime Mold Water Mold

  12. Motile Protists • Motile protists have structures to help them move: • Pseudopods: Means “false foot” , made of cytoplasm • Flagella: Whip-like tail • Cilia: Tiny, hair-like extensions

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