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Cell Division

Explore the phases of cell division - Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis. Detailed descriptions and photographs of plant and animal cell division stages provided. Learn about chromosomes, centromere, and spindle fibers. Discover the intricate process of cell division with this comprehensive resource.

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Cell Division

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  1. Cell Division Occurs in a series of stages or phases

  2. 1st: Interphaseoccurs before mitosis begins • Chromosomes are copied (# doubles) • Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase CELL MEMBRANE Nucleus Cytoplasm Centromere – place where the two sister chromatids meet

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

  4. 2nd: Prophase1st step in Mitosis • Mitosis begins (cell begins to divide) • Centrioles(or poles) appear and begin to move to opposite end of the cell. • Spindle fibers form between the poles. Centrioles Sister chromatids Spindle fibers

  5. Prophase Plant Cell Animal Cell Spindle fibers Centrioles Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

  6. 3rd: Metaphase 2nd step in Mitosis • Chromatids (or pairs of chromosomes) attach to the spindle fibers. Centrioles Spindle fibers

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

  8. 4th: Anaphase3rdstep in Mitosis • Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell. Centrioles Spindle fibers

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

  10. 5th: Telophase4th step in Mitosis • Two new nuclei form. • Chromosomes appear as chromatin (threads rather than rods). • Mitosis ends. Nuclei Nuclei Chromatin

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

  12. 6th: Cytokinesisoccurs after mitosis • Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.

  13. Animal Mitosis -- Review

  14. Plant Mitosis -- Review

  15. Cell Cycle

  16. - Cell Division The Cell Cycle 17

  17. MitosisAnimation http://www.cellsalive.com/mitosis.htm PowerPoint and Flipbook idea from: http://sciencespot.net/Pages/classbio.html

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