10-1-09 - Energy, Chemical Reactions, and Enzymes Reading...

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Unformatted text preview: Energy, Chemical Reactions, and Enzymes Reading assignment: Reading assignment: Chapter 8; pp. 142 161 Chapter 8; pp. 142 161 Metabolism: all the chemical reactions Metabolism: all the chemical reactions that occur in a living organism that occur in a living organism Catabolic reactions Catabolic reactions Anabolic reactions Anabolic reactions The Driving Force Energy: Definition Energy: Definition Kinetic vs. Potential energy Kinetic vs. Potential energy Thermodynamics: Thermodynamics: First and Second Law of First and Second Law of Thermodynamics Thermodynamics Fig. 8.5a The relationship of free energy to stability, work capacity, and spontaneous change Less free energy (lower G ) More stable Less work capacity More free energy (higher G ) Less stable Greater work capacity In a spontaneous change The free energy of the system decreases ( G < 0) The system becomes more stable The released free energy can be harnessed to do work Fig. 8-5b The relationship of free energy to stability, Fig....
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This note was uploaded on 11/06/2009 for the course BIOL 152 taught by Professor Niedenthal during the Fall '09 term at Kansas.

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10-1-09 - Energy, Chemical Reactions, and Enzymes Reading...

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