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Unformatted text preview: Handout for CHAPTER 6 - Energy Flow in a Cell Remember how important energy is for life! Every organism requires a constant supply of external energy to remain alive.-Inability to obtain or use energy= DEATH What is energy? Definition= The capacity to do work. Energy comes in many forms: some examples-Heat-Light-Moving particles-Chemical bonds of molecules! (Our focus)! First law of thermodynamics the conservation of energy First law of thermodynamics (from physics) Energy can change from one form to another, but it cannot be created or destroyed. What is the primary source of energy for all life on our planet? Where does the energy needed to sustain life on Earth come from? -SUN- 2 types of Energy Potential (stored energy)-Cant be used by cells directly-Chemical bonds contain potential energy 1 Chemical bond are the most important to us Kinetic energy ( Energy of motion)-Useful energy cells use to do work, etc.- Breaking chemical bonds releases kinetic energy. Relationship between potential and kinetic energy Energy Conversion-Potential energy is converted to kinetic energy which can then do work. What kind of energy do molecules have?...
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- Spring '08