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The Cell Cycle…

The Cell Cycle…. The cell cycle is a cycle of growth, development, and division. It is made up of different phases: 1. Interphase 2. M itosis 3. Cytokinesis. Interphase. Interphase - cell grows and develops Cells spend the longest period of time in interphase It has 3 parts:

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The Cell Cycle…

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  1. The Cell Cycle… The cell cycle is a cycle of growth, development, and division. It is made up of different phases: 1. Interphase 2. Mitosis 3. Cytokinesis

  2. Interphase • Interphase - cell grows and develops • Cells spend the longest period of time in interphase • It has 3 parts: • 1. G1 – Growth to full size, production of organelles • 2. S - DNA is replicated (copied) • 3. G2 – Cell prepares for division

  3. Mitosis – the nucleus and it’s contents divide • Follows interphase • Has 4 parts: • Prophase • Metaphase • Anaphase • Telophase

  4. 1. Prophase • Copied DNA condenses in chromosomes • Nucleus disappears • Spindle fibers form • 2. Metaphase • Chromosomes line up in the middle of the cell • Spindle fibers attach to them

  5. 3. Anaphase • Chromosomes separate due to spindle fibers pulling the apart • 4. Telophase • Nuclear membrane forms • Chromosomes unwind • Spindle fibers break down

  6. Cytokinesis – the division of the cytoplasm and it’s contents • Animal cell – cell membrane pinches together to divide the cell into two new daughter cells • Plant Cell – a cell plate forms and divides the cell into two new daughter cells

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