Chapter 8 Study Guide Metabolism C A energy associated with motion Metabolic Pathway D B the study of energy transformations Exergonic I C totality of an organisms chemical reactions Catabolic Pathway J D begins with specific molecule ends with a product each step is catalyzed by a specific enzyme Energy N E energy possessed due do location structure Chemical Energy G F consume energy small to big Thermal Energy K G potential energy available for release in a chemical reaction Anabolic Pathway L H disorder universal energy Entropy H I release energy big to small Potential Energy E J net release of free energy spontaneous Thermodynamics B K kinetic energy associated with random movement of atoms Kinetic Energy L absorbs free energy from surroundings nonspontaneous A Spontaneous reaction Endergonic F M M no energy input required N capacity to cause change Chapter 8 Study Guide 1 Chemical chaos would result if a cell s metabolic pathways were not under 2 3 4 5 6 tight E may either inhibit or stimulate an enzyme s activity F stabilizes the active form of the enzyme D stabilizes the inactive form of the enzyme A a form of allosteric regulation that can amplify enzyme activity C the end product of a metabolic pathway shuts down the pathway B A B C D E F Inhibitor Negative Feedback Cooperativity Activator Regulation Allosteric Regulation Chapter 8 Study Guide 1 Enzymes are proteins that speed up reactions 2 They do so by lowering the Ea barrier ENVIRONMENTAL 1 CHEMICAL 1 2 2 3 4 5 6 The reactant that enzymes act on is called the substrate Lock and key refers to substrate and enzyme Enzyme substrate complex The is the region of the where the substrate binds Effects of Conditions on Enzymes Other topics to review Thermodynamics ATP and phosphorylation ATP regeneration from Catabolism Free energy and all it entails Look at STUDY GUIDE on Blackboard Chapter 8 Study Guide Answer Key Page 1 C D J I N G K F H E B A M L Page 2 E F D A C B Page 3 Look on powerpoint for the graph 1 catalysts 2 Ea activation energy 3 substrate 4 enzyme substrate complex 5 active site enzyme Page 4 Environmental Chemical 1 Temperature 2 pH 1 Cofactors Inorganic Organic aka COENZYMES 2 Enzyme Inhibitors Competitive Nonceompetitive
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