1. Protists are unicellular organisms that have a nucleus.
Kingdom: Protista

2. Similar to Bacteria Same Unicellular
One of the first groups of living things on Earth. (1.5 billion years ago.)
Microscopic
Can cause disease.
Can be parasites
Same

3. Difference from Bacteria
Has a nucleus.
Live in watery environment.
Generally live as individual cells.
Protists vary greatly in appearance and function.
Different

4. 3 Categories I. Animal-like Protists. II. Plant-like Protists.
III. Fungus-like Protists.

5. I. Animal-like Protists
Protozoan means “First Animal”.
Cells contain a nucleus.
Cells lack a cell wall.
They are heterotrophs.
Most can move on their own.
Little Animals

6. One type: Amoeba Most familiar Sarcodine. Pseudopods: False Foot
Blob shaped.
Moves by stetching its cytoplasm

7. Type: Paramecium Pellicle: tough outer wall. Slipper shaped
Oral groove: like the mouth
Gullet: holds food.
Anal Pore: removes wastes
2 Nuclei
Reproduces by either binary fission or conjugation.

8. Plant-like Protists (Algae)
Unicellular and Multicellular
Can move on their own
Autotrophs: make their own food from simple materials using light energy (photosynthesis).
70% of the Earth’s oxygen is produced by Plant-like Protists!

9. 1. Euglena Green Unicellular Live in fresh water Flagella
Eyespot: sensitive to light.
Chloroplasts

10. III. Fungus-like Protists
Heterotrophs: Must consume food- can not make it themselves
Have cell walls.
Many have flagella and are able to move at some point in their lives.
Example: Slime Molds

11. Slime Molds
Type:
At first they look like amoeba, then later they look like mold.
Live on moist & shady places.