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Energy in a Cell

Energy in a Cell. All living organisms need energy. Cell Energy. All living organisms must be able to obtain energy from the environment in which they live.

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Energy in a Cell

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  1. Energy in a Cell All living organisms need energy

  2. Cell Energy • All living organisms must be able to obtain energy from the environment in which they live. • Plants and other green organisms are able to trap the light energy in sunlight and store it in the bonds of certain molecules for later use. • Other organisms cannot use sunlight directly • They eat green plants. In that way, they obtain the energy stored in plants.

  3. Autotrophs & Heterotrophs • Autotrophs (auto=self troph= to feed) • are the producers • Heterotrophs (hetero=other troph = to feed) • are the consumers

  4. Living creatures use ENERGY • Metabolism • all the reactions an organism performs to make & use energy • eating & digestion & elimination of waste • synthesis = building molecules (could be photosynthesis • cellular respiration = making energy mitochondria Chloroplasts

  5. Work and the need for energy • Active transport, cell division, movement of flagella or cilia, and the production, transport, and storage of proteins are some examples of cell processes that require energy. • The molecule in cells that is a quick source of energy for any organelle is adenosine triphosphate or ATP for short ATP

  6. ATP structure • ATP is composed of adenine (a nitrogenous base) & ribose, (a sugar ,also found in RNA) with three phosphate groups attached

  7. ATP shuttles chemical energy and drives cellular work • Hydrolysis of ATP releases energy by transferring its third phosphate to some other molecule • in the process, ATP energizes molecules

  8. What is energy in biology? ATP Adenosine TriPhosphate Whoa!HOT stuff!

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