Supplying the Cell

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  • Supplying the Cell
    • Transport
      • Diffusion
        • high to low
        • concentration gradient
        • no energy
      • osmosis
        • high to low
        • net movement of water
        • no energy
        • partially permeable membrane
      • active transport
        • low to high
        • concentration gradient
        • requires energy
    • Mitosis
      • parent cell has chomosomes
        • chromosomes copied
          • chromatids pull apart
            • two cells created, identical to parent
    • Cell differentiation
      • root hair cells
        • hairs increase SA, for absorption
      • ovum (egg cell)
        • carry food reserves for embryo
      • xylem
        • long, thin, hollow cells to transport water
      • sperm cell
        • tail for movement
      • nerve cells
        • long, slender axon to carry impulses
    • Stem cells
      • come from embryos or adult bone marrow
      • can become any cell

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