ATP_AND_THE_AMAZING_PROPERTIES_OF_PROTEINS_Jan_17

ATP_AND_THE_AMAZING_PROPERTIES_OF_PROTEINS_Jan_17 - ATP AND...

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ATP AND THE AMAZING PROPERTIES OF PROTEINS Function of cells: o Chemical reactions break down sugars and other fuels to release energy Energy: o The capacity to perform work o Two types of energy Kinetic->energy of motions Potential->stored energy Types of Chemical Reactions: o Exergonic Reaction: Releases energy Reactants covalent bonds contain more energy than the products. The reaction releases energy equal to the difference in potential energy between the reactants and products o Endergonic Reaction: Requires energy Reactants contain little potential energy. Energy is absorbed from the surroundings as the reaction occurs, so the products store more energy than the reactants. ATP powers all cellular work o Hydrolysis breaks apart ATP bonds, releasing an ADP and energy is released o Hydrolysis of ATP is an exergonic reaction because it releases energy o Phosphorylation: when ATP is transferred to another molecule (exergonic reaction)
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