Biology (Cell Structure)

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  • Created by: howarb09
  • Created on: 17-12-13 10:03
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  • CELL STRUCTURE
    • cell wall (plant only)
      • made of cellulose
      • supports and strengthens cell
    • cell membrane
      • Controls what enters the cell and holds the cell shape.
    • organelles
      • ribosomes
      • mitochondria
      • nucleus
        • contains DNA (genetic material)
    • cytoplasm
      • this is where chemical reactions that are controlled by enzymes take place
    • chloroplasts (plant only)
      • contains chlorophyll
        • chemical that plants use for hotosynthesis
          • photosynthesis causes light energy to be made into chemical energy in the form of glucose (plant food)
    • vacuole (plant only)
      • contains cell sap
        • sugars
        • salts
        • water
      • controlls firmness of cell
    • specialised plant cells
      • palisade mesophyll cells
        • found in leaves
          • contains chloroplasts (main photosynthetic cell)
      • root hair cells
        • absorb water and dissolved mineral ions
      • xylem vessela
        • long tubes of cell wall(empty)
          • transport water from the roots to the leaves
  • cell membrane
    • Controls what enters the cell and holds the cell shape.

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