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Cell Reproduction

The human body consists of approximately 10 to 100 trillion cells, with thousands dying daily. These cells are replaced through a process called mitosis, where they duplicate and divide to sustain life. This intricate process involves several phases: Interphase, Prophase, Metaphase, Anaphase, and Telophase. Each stage plays a crucial role in ensuring accurate DNA replication, proper alignment, and separation of chromosomes. Explore how cells reproduce and the key phases of the cell cycle through informative videos and resources.

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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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