BIOB34H3 Lecture Notes - Lecture 6: Electrochemical Gradient, Randomness, Creatine Kinase

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22 Dec 2014
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Second law : isolated systems spontaneously move towards a state of maximum entropy (i. e disorder) aka the earth is becoming more chaotic. Energy is transferred to product or released- doesn"t tell us if rxn will go forward or backward. Both laws describe constraints that exist when energy is diverted in a way that increases the entropy of a system, another form of energy. A man by the last name gibbs said that this gibbs free energy is the energy released by a process that is available to do work. ( e. g mechanical transport biosynthesis light emission) Some of this thermal energy is used within a system to increase randomness. The remainder of the thermal energy is called free energy ( g) because it"s available for other process. Difference between total energy and the amount of energy associated with the change in randomness (unavailable energy) G(free energy) = h(total energy) t s(unavailable energy)

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