1. Cell Reproduction

2. Cells Your body is made of between 10 to 100 trillion cells About one thousandth of them die every day.

3. Where do new cells come from? Cells are made by a process called mitosis. Cells reproduce by making exact copies of themselves to replace the dead cell.

4. Cell Cycle http://www.youtube.com/watch?v=ZEwddr9ho-4

5. Mitosis Interphase Prophase Metaphase Anaphase Telophase

6. Interphase Period of growth & development Hereditary information (DNA) copied (replicated / duplicated)

7. Prophase DNA begins to shorten & thicken – Now called chromatids / chromosomes Centromeres form Nuclear membrane breaks apart Spindle fibers form

8. Metaphase Chromatids / chromosomes line up Centromere attaches to spindle fibers

9. Anaphase Centromeres divide Spindle fibers shorten Chromatid pairs separate move to ends of cell Chromatids are now called – Each ½ of the pair is now called a chromosome

10. Telophase Spindle fibers disappear Chromosomes uncoil Nuclear membrane forms Cell divides (cytokinesis)

11. Interphase Prophase Metaphase Anaphase Telophase Interphase

12. http://www.youtube.com/watch?v=IlV 9hExXZnM&feature=plcp I Intelligent P People M Make A Anything T Totally great!