Today is Monday, October 21 st , 2013

1. In This Lesson: Cell Organelles – Part 2 (Lesson 4 of 5) Today is Monday,October 21st, 2013 Pre-Class: Where can you find DNA in the cell? [don’t forget to list all the places and expect a BoE] Also, make sure you have your cell worksheets. Yeah. http://fusionanomaly.net/mitochondria.jpg

2. Today’s Agenda • The Missing Cell Parts? • I Have, Who Has? • Celltabulous! • Cell-ominoes • Board game-ish! • When One-Celled Organisms Attack! • Or swim around…

3. Pre-Class • Where can you find DNA in a cell? • [there are 3 places] • You can find DNA in: • Nucleus • Mitochondria • Maternal! • Chloroplasts

4. I Have, Who Has? • New and improved! • Now with cells and standing!

5. Cytoplasm • It’s not really an organelle, but the cytoplasm is vital to the cell’s functions. • The cytoplasm is the gel-like liquid (mainly water) that fills the cell. • [Form] • Helps organize molecules and organelles and allows for communication or signaling between them. • [Function]

6. Coloring Sheet

7. Challenge Question • How are plant cells supported? (3 ways) • Cell wall • Vacuole • Cytoskeleton • How are animal cells supported? • And what about animals without bones? http://farm3.static.flickr.com/2361/2527550954_6321d513e8.jpg?v=0

8. Cytoplasm Structures • There’s one problem with having just gel on the inside of your cells…it gets all blobby! • To solve this, inside the cytoplasm is the cytoskeleton, found in all cells. • This is, almost word-for-word, “cell bones.” • In this case, the bones are made of proteins. • Two of the structures in the cytoskeleton are called microfilaments and microtubules.

9. Cytoskeleton • Microfilaments: • Made of a protein called actin. • Help cells move and support them. • Microtubules: • Made of proteins called tubulins. • Form centrioles and help in cell division. • Also help form cilia and flagella. http://bcrc.bio.umass.edu/gbi/images/mtsandactin.jpg

10. Coloring Sheet

11. Other Parts of the Cell http://www.uic.edu/classes/bios/bios100/lectures/cilia_flagella.jpg

12. Cilia and Flagella • As you might imagine, some cells want to move. • To do this, they use flagella (singular: flagellum) and cilia (singular: cilium). • Flagellum (made of protein) • A long “whip-like” structure usually on one end of the cell. • Most cells have one or two flagella. • Cilia (made of protein) • Many short “hair-like” structures along the outside of the cell. • Most cells have lots of cilia. • Cilia also move other things along the surface of the cell. • These are mainly found in prokaryotes and animal cells (plus some others we’re not mentioning, like protists).

13. Coloring Sheet

14. Unicellular Organisms Video • Let’s tie a few things together and take a look at some one-celled organisms. • These guys are common to pond water everywhere. • They’re so small, there’s a lot of them…EVERYWHERE. • But mostly in water. • Video! With an accent!

15. Cell Coloring Sheet • There’s one more thing on your cell coloring sheet that we haven’t directly talked about… • Chromatin! • There’s a whole unit on this. For now: • It’s not an organelle. • It’s basically DNA, and it’s in the nucleus, and it’s invisible. • More to come… http://www.reading.ac.uk/cellmigration/chromatin.jpg

16. Summary

17. Summary

18. Cell-ominoes • Head to your lab tables when I tell you. • On those tables are set of “Cell-ominoes.” • They work like regular dominoes except instead of matching numbers, you’re matching cell parts to their functions. • Be creative!

19. Whiteboards • Return to the challenge questions! • How many more can we answer better? • [awkward sentence]

20. Cell Structure • Now let’s turn it over to everyone individually to practice. • On Quia, open Cell Structure Gizmo.

21. Closure • http://www.sheppardsoftware.com/health/anatomy/cell/index.htm