Organelles- structure & function

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  • Created by: melissa56
  • Created on: 12-10-14 12:21
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  • Organelles- structure & function
    • Nucleus
      • Fuction
        • The nucleus houses nearly all the cell's genetic material.
        • The chromatin consists of DNA and proteins.
          • It has instructions for making proteins.
            • some of these proteins regulate the cells activities.
          • when cells divide, chromatin condenses into visible chromosomes
    • Endoplasmic reticulum (ER)
      • Function
    • Golgi apparatus
      • Function
    • Mitochondria
      • Function
        • is where ATP is produced (adenosine triphosphate) during respiration
        • ATP is sometimes called the universal energy carrier
          • as almost all activities in the cell are driven by the energy release from ATP
    • Chloroplasts
      • Function
        • site of photosynthesis in plant cells
        • light energy is used to drive reactions of photosynthesis, in which carbohydrate molecules are made my co2 and water
    • Lysosomes
      • Function
        • contain powerful digestive enzymes
        • rold to break down materials, eg white blood cell lysosomes break down invading microorganisms
        • specialised one is the head of a sperm cell
          • penetrates the egg by breaking down the material surrounding it


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