Energy - ADP E + Pi nergy Energy ATP

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ADP + Pi ATP Energy Energy To a biologist, energy is the capacity to do work—the potential to cause  change Forms of energy Energy comes in many forms: Chemical-bonds Electromagnetic-light Concentration gradients-dam Heat-random molecular motion Forms of energy: potential energy Potential energy Energy that has been captured and stored Will be used in future In biology, seen as: Chemical bonds Concentration gradients
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Forms of energy: kinetic energy Kinetic energy Energy of motion, energy being used In biology, seen as: Heat(thermal) Light Mechanical(motion) First law of thermodynamics 1 st  law: Conservation law energy cannot be created or destroyed o energy can be converted and change form In a closed system: During an energy transaction, the amount of total energy does not  change Second law of thermodynamics 2 nd  law: increasing entropy over time
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Entropy= energy that cannot do work (disorder) No energy transaction (use) is 100% efficient Cannot completely convert heat into work Usable energy decreases when energy transactions take place Disorder increases Quantitative expression
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Energy - ADP E + Pi nergy Energy ATP

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