1. Unicellular Organisms

2. What is a unicellular organism?
Any life form that consists of a single cell.
They can move, digest food, and reproduce.

3. Euglena Environment: Ponds or puddles with rich organic matter.
Movement: By flagella
Important Structures:
Cell Membrane
Nucleus: controls cell activities and contains DNA
Flagellum: helps to move
Chloroplast: helps with photosynthesis
Contractile Vacuole: removes excess water
Cytoplasm
Food: They make their own food or absorb food from their environment.

4. Euglena Chloroplasts help to make their own food by photosynthesis.
Can absorb food from their environment.
This means they are considered heterotrophic (consume food) and autotrophic (make food).

5. Euglena

6. Amoeba Environment: Mud at the bottom of freshwater ponds.
Movement: They change shapes which allows them to move (called shape shifters).
Important Structures:
Cytoplasm: carries out chemical reactions
Nucleus: controls the cell
Cell Membrane: allows substances to enter and exit the cell
Food Vacuole: digests food
Contractile Vacuole: gets rid of excess water
Pseudopodium: what allows it to move over mud (false foot)
Capturing Prey: They surround their prey and engulf it.

7. Amoeba Some are considered parasites.
They reproduce asexually by splitting into two parts (fission).
They eat: algae, bacteria, plant cells, and other unicellular organisms.

8. Amoeba

9. Volvox Environment: ponds, ditches, shallow puddles
Movement: They beat flagella which allows it to swim.
Important Structures:
Daughter colonies
Flagella: helps to move
Chloroplast: contains chlorophyll
Food: makes its own food by photosynthesis.

10. Volvox
Daughter colonies mature and the Volvox bursts open to release them.

11. Volvox

12. Paramecium Environment: Fresh water or stagnant water
Movement: Cilia bend and straighten helping propel the paramecium through water
Important Structures:
Contractile Vacuoles (2): removes excess water
Cytoplasm: water absorption
Cilia: hair-like projections that propel it through water
Nucleus: controls cell activities
Food: uses cilia to sweep the food into the cell.

13. Paramecium
They fire trichocysts at predators to defend themselves. Trichocysts sting the predator.
They can move backward when they bump into something.
They feed on bacteria, algae, and yeast through the cilia.
They reproduce by splitting in two (fission).
Algae live in the cytoplasm of a paramecium.

14. Paramecium

15. Citations Paramecium Pics: Amoeba Pics: Volvox Pics: Euglena Pics:
infovisual.info
goscienceseven.com
microscope-microscope.org
Amoeba Pics:
enchantedlearning.com
microscopy-uk.org.uk
leavingbio.net
Volvox Pics:
morning-earth.org
rkm.com.au
volvoxaureus.com
Euglena Pics:
fcps.edu
schursastrophotography.com