Biology - Cells (cell cycle)

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  • Cells
    • Neeed for growth and repair
    • Cell's divide in cell cycle. Genetic info doubled then split into 2 cloned cells (1 parent cell to 2 daughter cells)
      • Cell cycle
        • Stage 1
          • Longest stage
          • Normal cell function carried out
          • DNA replicated to form 2 copies of each chromosome
          • Cell grows & increases sub-cellular structures (ribosomes, mitochondria)
        • Stage 2
          • Mitosis
          • 1 set of chromosomes pulled to each end of cell + nucleus divides so each cell has the same number of chromosomes as started with before they were replicated
        • Stage 3
          • Cell dived completely in 2 (daughter cells = identical to parents cell)

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