welcome to the exciting world of protists… animal-like protists plant-like protists fungus-like...
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Welcome to the Exciting World of Protists…
Animal-like Protists
Plant-like Protists
Fungus-like Protists
SC ScienceStandard(s) Addressed:
Standard 7-2:
The student will demonstrate an understanding of the structure and function of cells, cellular reproduction, and heredity.
Indicator Addressed- 7-2.3
Compare the body shapes of bacteria and the body structures that protists (euglena, paramecium, amoeba) use for food gathering and locomotion.
Protist Diversity200,000 species come in different shapes, sizes, and colors
All are eukaryotes – have a nucleus and membrane-bound organelles
Protozoans
Animal-like Protists
ProtozoansUnicellular – made up of one cell
Heterotrophs – they eat other organisms or dead organic matter
Classified by how they move
Phyla of ProtozoansAmoebas
FlagellatesCiliates
Sporazoans
Amoebas: the blobs
No cell wallMove using pseudopods – plasma extensions
Engulf bits of food by flowing around and over them
Flagellates: the motorboats
Use a whip-like extension called a flagella to move
Some cause diseasesWater-borne diarrhea GiardiaAfrican Sleeping Sickness Trypanasoma (Vector: Tsetse Fly)
Our Example: Euglena
Ciliates: the hairy onesTiny hairs called cilia are used for locomotion and feeding
Cilia beats in a synchronized pattern to cause movement
Our Example: Paramecium
As an Aside…
Sporazoans: the parasite
Non-motile - Do not moveLive inside a hostOne type causes malaria
Plasmodium
Malaria in red blood cells
The End
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