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Cell Cycle & Mitosis PowerPoint Presentation
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Cell Cycle & Mitosis

Cell Cycle & Mitosis

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Cell Cycle & Mitosis

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  1. Cell Cycle & Mitosis

  2. Cell Cycle • Cell Cycle = IMPAT • I = Interphase • MPAT= Stages of Mitosis

  3. Cell Cycle

  4. Mitosis • Interphase (stage before mitosis!) • G1 + S + G2 = Interphase • Cell grows, makes more cytoplasm and organelles duplicate, copies DNA, and gets ready to divide

  5. Prophase • Chromosomes shorten & thicken • Centrioles move to opposite poles of the cell • Spindle fibers extend from the centrioles toward each chromosome • Nuclear membrane dissolves

  6. Metaphase • During late prophase chromatids begin to move toward the cell equator (metaphase plate) • At metaphase the chromatids are aligned at the equator

  7. Anaphase • Chromatids begin to move apart, toward opposite poles

  8. Telophase • Chromosomes reach opposite poles of the cell • Spindle fibers dissolve • Nuclear membrane reforms at each end of the cell

  9. Cytokinesis • Cytokinesis = splitting of the cytoplasm • Not an actual “phase of mitosis”. • The division of cytoplasm after separation of the chromosomes • In plant cells, a new cell wall forms to divide the two daughter cells (CELLPLATE) • In animal cells, the cleavage furrow forms