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Kingdom Protista:
The Protists
Objectives 4.03 & 4.04:
Disease-causing microorganisms & Parasites
Protists
Kingdom Protista – the most diverse Kingdom
Cell Type: Eukaryotic
Has a nucleus and membrane-bound organelles
Can be unicellular or multicellular
Energy Source: Can be heterotrophic or autotrophic
Reproduction
Can be asexual or sexual
Asexually by binary fission
Sexually by conjugation
Exchange DNA through nucleus
3 Main Groups
Animal-Like Protists (Protozoans):
Paramecium & Amoebas
Plant-Like Protists: Algae
Fungus-Like Protists: Water Molds/Slime
Molds
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
Paramecium Amoeba
Cilia = tiny hairs that aid in movement
Adaptations of Animal-Like Protists
Pseudopodia:
“false foot”
An extension of the
cytoplasm that aids in
movement and capturing of
food
Contractile Vacuole
Pumps out excess water
Prevents bursting from
living in watery
environments
PlasmodiumAnimal-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!
Plasmodia & Malaria
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
Algae Euglena
Flagella = tail for movement
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
Slime Mold Water Mold
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