1. Protists

2. Kingdom Protista Eukaryotes Unicellular or multicellular
CLASSIFIED according to the way they obtain nutrients:
Animal-like protist - heterotroph
Plant-like protist - autotroph
Fungi-like protist - decomposer

3. Bacteria

4. Protozoans
Animal-like Protists

5. Protozoans Classified by how they move:
1. Zooflagellates – use flagella
2. Sarcodines (ameoba) – use pseudopods
3. Ciliates (paramecium) – use cilia
4. Sporozoans - parasitic

6. Structure of protozoans –
Food vacuole –stores food
Contractile vacuole – regulate water level
Gullet – trap food
Anal pore – releases waste

7. Amoebas in Action

8. Disease Protozoan Malaria
Plasmodium species – carrier Anopheles mosquito
Toxoplasmosis
Toxoplasma species – carrier birds, rodents, cats
Giardiasis
Giardia species – carrier beavers; contaminated H2O
Chagas Disease
Trypanosoma species – carrier kissing bug
African Sleeping Sickness
Trypanosoma species – carrier Tsetse fly
Amebic Dysentery
Entamoeba species – contaminated H2O

9. Toxoplasmosis parasites

10. PLANT-LIKE PROTIST (AKA: ALGAE)

11. Unicellular Algae -
1. Euglena
2. Dinoflagellates – algal blooms produce red tide
3. Diatoms – produce thin cell walls rich in silicon (make glass)
Multicellular Algae (aka: seaweed) – red, brown, green algae

12. Phytoplankton – population of photosynthetic organism
When waste is excessive, algae grows into masses called algal blooms; depletes nutrient in H2O which kills aquatic organisms

13. Euglenas

14. Diatoms: The Golden Ones

15. Dinoflagellates
Cause Red Tides

16. Red, Brown, and Green Algae:

17. Human uses of Algae –
much of Earth’s O2 is produced by algae – uses photosynthesis to produce oxygen
chemicals in algae – medicines (treat stomach ulcers), make plastics, waxes, etc.
food --nori wraps in sushi, ice cream, candy bars, syrups, etc.

18. Fungus-like Protists

19. Characteristics of Fungus-like Protists
Includes slime molds & water molds
Multicellular, heterotrophic
Live in moist or watery habitats
Can be parasites & cause plant diseases
Produce spores