1. DO NOW How are mitochondria and chloroplasts similar? How are they different? Homework: Cell organelles worksheet due tomorrow Quiz Friday. Money ($15) due TOMORROW!!!

2. Cytoskeleton Composed of Microtubules and Microfilaments Microtubules: Thick, strong spirals Microfilaments: long, thin, skinny protein Cytoskeleton provides structure

3. Microtubules  Cell division: Connect to chromosomes to help with cell’s first split  Locomotion in protists- cilia and flagella

4. Microfilaments  Cell movement  microfilaments are found attached to proteins on the cell membrane  Binding proteins allow microfilaments to push and pull on cell membrane to help the cell move

5. The Parts of The Eukaryotic Cell 7) Support Cytoskeleton A network of thin, fibrous materials that act as a scaffold and support the organelles. Microtubules – hollow filaments of protein. Microfilaments – solid filaments of protein.

6. Locomotion Microtubules combine in specific arrangements to form cilia and flagella Cilia: little hairs outside a paramecium or other protists Flagella: long, thick tails

7. The Parts of The Eukaryotic Cell 8) Locomotion A) Cilia Short, numerous, hair-like projections from the plasma membrane. Move with a coordinated beating action.

8. The Parts of The Eukaryotic Cell 8) Locomotion B) Flagella Longer, less numerous projections from the plasma membrane. Move with a whip-like action.

9. Cilia and flagella

10. Centrioles  Found near the nucleus (centrosome)  Function in the process of cell division (mitosis and meiosis)  During the time of cell division, there is a total of 4 centrioles  Meet a centriole Meet a centriole

11. The Parts of The Eukaryotic Cell 9) Cell Division A)Centrioles made of protein. play a role in the splitting of the cell into two cells. found in animal and fungi cells.

12. Pick your favorite organelle!  Instagram it!  Describe the function of this organelle  How would the cell be affected if this organelle did not exist? When you are done, stick it up on the board