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Unformatted text preview: or destroyed but only converted from one form into another. If an object or process gains an amount of energy, it does so at the expense of a loss in energy somewhere else in the universe 2. The Second Law of Thermodynamics The entropy of the universe increases with any change that occurs. Living things preserve their internal order by taking from the surroundings free energy in the form of nutrients or sunlight, and returning to their surroundings an equal amount of energy as heat and entropy. 2 Exergonic and Endergonic Reactions Exergonic Reaction-spontaneous -energy releasing reaction; energy is released-energy is released as reactants form products; products have a lower amount of energy than the reactants Endergonic Reaction-not spontaneous-energy-requiring reaction; energy is added-reactants with low energy content are converted into products with a higher energy level...
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- Spring '09