1. KEY CONCEPT Animal-like protists are single-celled heterotrophs that can move.
Also called protozoa

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

3. Macronucleus – the “brain”; controls cell activities
Micronucleus – has the chromosomes; controls reproduction
Contractile vacuole – expels extra water; works like a “sump pump”
Oral groove – “mouth”

4. Protozoa with flagella are zooflagellates.
flagella help zooflagellates swim
May have 1 or more flagella
more than 2000 zooflagellates

5. Some protists move with pseudopods.
change shape as they move
Use pseudopodia for moving and feeding
amoebas

6. Some protists move with pseudopods.
change shape as they move
amoebas
foraminifera

7. Some protozoa move with cilia.
also called ciliates
cilia help protists swim and capture food
more than 8000 ciliates
Ex: Paramecium
macronucleus
food vacuole
oral groove
micronucleus
contractile vacuole
cilia

8. 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. (Anopheles)
Sleeping sickness is caused by Trypanosoma and spread by Tsetse flies.
Giardiasis is caused by Giardia and spread through water.
Malaria Infection

9. Genetic relationship to malaria and Sickle Cell Anemia
AA – normal red blood cells, no malaria resistance, may die
Aa – some Sickle cell symptoms, resistance to malaria, so live
aa – have Sickle Cell Anemia,
may die, have resistance to
malaria ( but so what? Die anyway)