Welcome to the Exciting
World of Protists…
Animal-like Protists
Plant-like Protists
Fungus-like Protists
SC Science
Standard(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 Diversity
 200,000
species come in
different shapes, sizes, and
colors
 All are eukaryotes – have a
nucleus and membrane-bound
organelles
Protozoans
Animal-like Protists
Protozoans
 Unicellular
– made up of one
cell
 Heterotrophs – they eat
other organisms or dead
organic matter
 Classified by how they move
Phyla of Protozoans
Amoebas
Flagellates
Ciliates
Sporazoans
Amoebas: the blobs
 No
cell wall
 Move 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 diseases
Water-borne
diarrhea  Giardia
African Sleeping Sickness
Trypanasoma (Vector: Tsetse Fly)
Our Example: Euglena
Ciliates: the hairy ones
 Tiny
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 move
 Live inside a host
 One type causes malaria
Plasmodium
Malaria in red blood
cells
The End 