1. KEY CONCEPT Animal-like protist are single-celled heterotrophs that can move.

2. 19.2 Animal-Like protists

3. Animal-like protists move in various ways.
Animal-like protists are often called protozoa.
macronucleus
food vacuole
oral groove
micronucleus
contractile vacuole
cilia

4. Protozoa that move with flagella are zooflagellates.
flagella are an extension of the cytoplasm
help zooflagellates swim
some cause disease while others are beneficial to an organism (i.e help termites digest wood).
more than 2000 zooflagellates

5. Some protists move with pseudopods (false foot).
change shape as they move
amoebas

6. Amoebas use their pseudopod. (“false foot.”) to move and to eat!
They do this by engulfing and digesting particles
This process is called phagocytosis

7. Some protozoa move with cilia.
cilia are short, hair-like structures that cover the surface of the cell
cilia help protists swim and capture food
more than 8000 types of ciliates
macronucleus
food vacuole
oral groove
micronucleus
contractile vacuole
cilia

8. Paramecium is very common in fresh water ponds
cilia help paramecium swim and capture food
food particles are swept in to the oral groove by the cilia
a food vacuole forms at the end of the gullet and is digested by enzymes
the contractile vacuole pumps water out of the cell
They have multiple nuclei – a macronucleus and many small micronuclei
macronucleus
food vacuole
oral groove
micronucleus
contractile vacuole
cilia
gullet

9. Some animal-like protists cause disease.
Protists cause some well-known infectious diseases.
sporozoites
human liver
liver cells
developed
parasites
red blood
cells
Malaria is caused by Plasmodium and spread by mosquitoes.
Sleeping sickness is caused by Trypanosoma and spread by flies.
A giardia infection is caused by Giardia and spread through water.
Malaria Infection

10. The following three slides were not in your reading material
The following three slides were not in your reading material. Make sure you take notes.

11. Euglenoids are a large group of plantlike protists.
mostly photosynthetic
some heterotrophic
single-celled
one or two flagella
pellicle
nucleus
chloroplast
eye spot
contractile
vacuole
flagellum

12. Slime molds and water molds are funguslike protists.
Slime molds have both funguslike and animallike traits.
decomposers, like fungi
can move, like animals

13. Water molds are freshwater, funguslike protists.
one type of water mold caused Great Potato Famine of Ireland in the 1800’s
made of branching strands of cells
can be parasites of plants or fish