2. Cell Cycle Notes http://www.youtube.com/watch?v=Q6ucKWIIFmg

3. Biology is the only subject in which multiplication is the same thing as division…

4. Why go through MITOSIS Multi-celled organisms –for growth from fertilized egg to adult we need to make more cells –for repair replace cells that die from normal wear & tear or from injury

5. Dividing cells… What has to be copied –DNA –organelles –lots of other molecules animal cellplant cell

6. Cell Cycle: Phase 1: Cell grows, copies DNA and copies organelles nucleus cell DNA Interphase

7. DNA must be replicated… nucleus cell DNA in chromosomes chromosomes in cell 4 single-stranded chromosomes

8. DNA must be replicated… nucleus cell duplicated chromosomes duplicated chromosomes 4 double-stranded chromosomes

9. double-stranded human chromosomes ready for mitosis

10. Cell Cycle: Phase 2: DNA winds up into chromosomes and centrioles move to the poles of the cell –DNA is wound up into chromosomes to keep it organized nucleus cell duplicated chromosomes Prophase

11. Cell Cycle: Phase 3: Chromosomes line up in the middle of the cell attached to protein “cables” that will help them move duplicated chromosomes lined up in middle of cell Metaphase

12. Cell Cycle: Phase 4: Chromosomes move away from each other (separate) –start moving to opposite ends chromosomes split & move to opposite ends anaphase

13. Cell Cycle: Phase 5: Cell starts to divide into two cells - Two new nuclei form Telophase

14. Cell Cycle: Phase 6: Cells separate and DNA unwinds –now they can do their every day jobs cytokinesis

15. 2 New “daughter” cells 2 exact copies of original cells –same DNA –“clones”

16. Cell division in Animals

17. interphase prophase metaphaseanaphasetelophase cytokinesis I.P.M.A.T.C. P lease M ake A nother T wo C ells

18. Mitosis in whitefish embryo

19. Mitosis in plant cell

20. Types of Reproduction Asexual –One parent cell divides into two daughter cells http://www.youtube.com/watch?v=4JIytOL-Q18 http://www.youtube.com/watch?v=DY9DNWcqxI4 Amoeba Red blood cells

21. Types of Reproduction Sexual Reproduction –Two parent cells join to for one daughter cell –http://www.youtube.com/watch?v=oSx9t5pof88

22. Types of Reproduction Asexual –One parent cell divides into two daughter cells http://www.youtube.com/watch?v=4JIytOL-Q18 Amoeba Red blood cells