objectives 4 03 4 04 disease causing microorganisms parasites n.
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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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objectives 4 03 4 04 disease causing microorganisms parasites
Objectives 4.03 & 4.04:

Disease-causing microorganisms & Parasites

Kingdom Protista

what is a protist
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 main groups
3 Main Groups
  • Animal-Like Protists(Protozoans): Paramecium & Amoebas
  • Plant-Like Protists: Algae
  • Fungus-Like Protists: Water Molds/Slime Molds
animal like protists
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
plasmodium
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!
plant like protists
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
fungus like protists
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
motile protists
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