ENERGY AND LIFE

BIOLOGY - Energy and Life

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  • Created by: Azizah
  • Created on: 17-02-13 16:16
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  • ENERGY AND LIFE
    • Energy is the ability to do work
      • Renewable Energy
        • Renewable energy is natural energy which does not have a limited supply. Renewable energy can be used again and again, and will never run out.
      • Non-Renewable Energy
        • Renewable energy is natural energy which does not have a limited supply. Renewable energy can be used again and again, and will never run out.
    • Organisms
      • Autotrophs
        • Organishms that make their own food ; e.g Plants
          • Plants photosynthesize by absorbing lught energy from the sun and combine it with water and carbon dioxide and produces sugar and oxygen. Humans exhale carbon dioxide, which plants use to form the oxygen that we breath.
      • Heterotrophs
        • Organisms that depend on other organisms for food ; e.g Humans, Animals
          • Heterotrophs do this by consuming other organisms.
    • ATP (Adenosine Triphosphate) is an adenosine molecule with 3 phosphates attached at the end.
      • When a phosphate is detached from ATP energy is freed and used for whatever it is needed for, and the ATP becomes ADP (Adenosine 2 phosphate).
      • ATP is the energy molecule of a cell.

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