1. Bell Ringer: No paper needed Why do cells divide?

2. Joke of the Day:

3. Picture of the Day: Facebook………………?

4. Cell Division: It’s Mitosis…..not Your Tosis….

5.  Cell Division: (Mitosis) the process by which a cell divides into two new daughter cells.  Why do cells divide?  They divide before they become too large!  Nucleus has a hard time managing a cell that is too large.

6. Cancer: Uncontrolled Cell Growth  Cells lose control over their cell cycle and they start dividing uncontrollably and end up with a huge number of cells. http://www.youtube.com/watch?v=LEpTTolebqo

7. Chromosomes  Contains Genetic Material (DNA).  Each living thing has a specific number  Fruit Flies have 8  Carrots have 18  Humans have 46

8. Chromatin  Granular material visible within the nucleus  During cell division, Chromatin condenses to formed Chromosomes Chromatin Chromosome

10. Chromosomes and Cell Division  Before cell division, each chromosome is replicated or copied.  Each chromosome is made up of 2 identical sister chromatids attached at an area called the centromere.

11. Cell Cycle Definition:A series of events that cells go through as they grow and divide. M phase G 2 phase S phase G 1 phase M phase (Mitosis)

12. Events of the Cell Cycle  Interphase: Longest phase of the cell’s life. Divided into the G1, S1, and G2 phases  Cell Division: (M phase: Mitosis) Is relatively fast M phase (Mitosis) G2 phase S phase G1 phase

13. 2 Stages of Cell Division (the M phase)  Mitosis: Cell nucleus divides  Cytokinesis: Cytoplasm divides M phase (Mitosis)

14. Centrioles Chromatin Interphase Nuclear envelope Cytokinesis Nuclear envelope reforming Telophase Anaphase Individual chromosomes Metaphase Centriole Spindle Centriole Chromosomes (paired chromatids) Prophase Centromere Spindle forming

15. Interphase  Longest phase of the cell’s life  G1: Phase when cells do most of their growing.  S1: DNA is replicated  G2: Organelles are produced in order to prepare for Mitosis

16. Cell Membrane (Membrane)

17. Interphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

18. Centrioles Chromatin Interphase Nuclear envelope Cytokinesis Nuclear envelope reforming Telophase Anaphase Individual chromosomes Metaphase Centriole Spindle Centriole Chromosomes (paired chromatids) Prophase Centromere Spindle forming

19. Prophase 1. Chromatin condenses into Chromosomes. 2. Centrioles separate and take position on opposite sides of the nucleus 3. Spindle fibers begin to form between the centrioles.

21. Prophase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

22. Centrioles Chromatin Interphase Nuclear envelope Cytokinesis Nuclear envelope reforming Telophase Anaphase Individual chromosomes Metaphase Centriole Spindle Centriole Chromosomes (paired chromatids) Prophase Centromere Spindle forming

23. Metaphase  Chromosomes line up across the center of the cell.

24. Fibers

25. Metaphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

26. Centrioles Chromatin Interphase Nuclear envelope Cytokinesis Nuclear envelope reforming Telophase Anaphase Individual chromosomes Metaphase Centriole Spindle Centriole Chromosomes (paired chromatids) Prophase Centromere Spindle forming

27. Anaphase  The sister chromatids separate into individual chromosomes and are pulled apart by the Spindle Fibers!

29. Anaphase Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

30. Centrioles Chromatin Interphase Nuclear envelope Cytokinesis Nuclear envelope reforming Telophase Anaphase Individual chromosomes Metaphase Centriole Spindle Centriole Chromosomes (paired chromatids) Prophase Centromere Spindle forming

31. Telophase  Chromosomes gather at opposite sides of the cell.  Chromosome break apart into Chromatin

33. Centrioles Chromatin Interphase Nuclear envelope Cytokinesis Nuclear envelope reforming Telophase Anaphase Individual chromosomes Metaphase Centriole Spindle Centriole Chromosomes (paired chromatids) Prophase Centromere Spindle forming Section 10-2

34. Cytokinesis  The cytoplasm pinches in half (organelles).  Each new daughter cell has an identical set of duplicate chromosomes.  Example: 4 Chromosomes 4 Chromosomes

35. http://www.youtube.com/watch?v=1kRWvioLFFc Twilight Mitosis

36. Cytokinesis End of Cell Division

37. Telophase & Cytokinesis Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

38. Animal Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Cytokinesis

39. Plant Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Cytokinesis

40. http://highered.mcgraw-hill.com/sites/0072495855/student_view0/chapter2/animation__mitosis_and_cytokinesis.html

41. Bell Ringer : Identify the following stages of the Cell Cycle Determine the proper order 1 st – 6th 1. 2. 3. 6. 5. 4. Metaphase Interphase Cytokinesis Telophase Prophase Anaphase 1st 4th 3rd 5th 6th 2nd