1. Cytoskeleton & Movement
Do Now:
Identify the super-important cell parts that do each of the following functions:
Cellular respiration
Transports molecules out of the cell
CO2 + H2O  CH2O + O2
Make proteins
Stores information about protein structures.

2. Cytoskeleton

3. Cytoskeleton
Just like your body has a skeleton to maintain its shape and size, cells have a cytoskeleton to do the same thing.

4. Microfilaments are the smallest strands of the cytoskeleton

5. Microfilaments are a polymer of a protein called actin.
They’re used for cell movement and muscle contraction

6. Microtubules are larger strands and are thicker and stronger.

7. Microtubules are hollow tubes made of a protein called tubulin.

8. During cell division, spindle fibers move chromosomes apart
During cell division, spindle fibers move chromosomes apart. Spindle fibers are microtubules.

9. Cell Part: Centrosome & Centrioles
The centrioles (2 per centrosome) are responsible for coordinating the division of chromosomes during eukaryotic cell division.

10. Centriole Structure: Interesting Bio-geometry

11. Movement
Some cells move using organelles called cilia and flagella

12. Cilia are small hair-like structures on the outside of a cell.

13. If a cell has cilia, it always has a lot of them!

14. Cilia (and flagella) are made of microtubules bundled together.

15. Flagella are much bigger than cilia, and cells that have them only have a few.

16. One More Way to Move: Pseudopodia
Means “false foot”
Think blob

17. How do cells move? Cilia: many tiny beating “hairs.”
Flagella: a few long, whip-like propellers.
Pseudopodia: flow from 1 spot to another.
Do The Dance….

18. Movement in Animals What body systems work together to make you move?
How is that similar to the cell systems we just learned about?

19. Homework
Read