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16 Cards in this Set

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ATP
powers nearly all forms of cellular work
Cellular Metabolism
the chemical activities of cells, the sum of endergonic & exergonic reactions
Cellular Respiration
energy-releasing chem. breakdown of glucose molecules & the storage of the energy in a form that the cell can use to perform work
Chemical Energy
potential energy of molecules
Endergonic Reactions
a chemical reaction that yields products with more potential energy than the reactants
Energy
the capacity to perform work
Energy Coupling
using energy released from exergonic reactions to drive essential endergonic reactions
Entropy
a measure of disorder in a system
Exergonic Reaction
chemical reaction in which the reactants contain more potential energy than the products
Heat
the amount of energy associated with the movement of the atoms & molecules in a body of matter; energy in its most random form
Kinetic Energy
energy that is doing work
1st Law of Thermodynamics
the total amount of energy in the universe is constant; transferred & transformed but not created nor destroyed
2nd Law of Thermodynamics
energy conversions reduce the order of the universe, increasing its entropy
Phosphorylation
the transfer of a phosphate group, usually from ATP, to a molecule
Potential Energy
stored energy
Thermodynamics
the study of energy transformations that occur in a collection of matter