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Cell Reproduction

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

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Cell Reproduction

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  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. http://www.youtube.com/watch?v=IlV9hExXZnM&feature=plcp • I Intelligent • P People • M Make • A Anything • T Totally great!

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