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First Foldable: The Cell Cycle
Page 41 in your notebook
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Flap 1: Gap 1 (G1) - First stage of the cell cycle
- Cell carries out normal functions - Cell increases in size, organelles increase in numbers
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Flap 2: Synthesis (s) - Second stage of the cell cycle
- The cell makes an identical copy of the DNA in the nucleus
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Flap 3: Gap 2 (G2) - Third stage of the cell cycle
- Additional growth occurs - Cell goes through a critical checkpoint to make sure everything is in order
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Flap 4: Mitosis - Final stage of cell cycle
- Division of the cell to create two identical daughter cells - Ends with cytokinesis, the division of the cell cytoplasm
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Second Foldable: Mitosis
Page 42 in your notebook
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Flap 1: Prophase - DNA and proteins condense into chromosomes
- The nucleus begins to break down - Centrioles move to opposite poles - Spindle fibers form
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Flap 2: Metaphase - Spindle fibers attach to each chromosome
- Chromosomes line up along the middle of the cell
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Flap 3: Anaphase - Chromatids (halves of the chromosomes) separate and move to opposite side of the cell
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Flap 4: Telophase - Two new nuclear membranes form
- Chromosomes begin to uncoil - Spindle fibers fall apart - Cytokinesis occurs, dividing the cytoplasm between the two daughter cells
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