Lecture Outline 10-1

Lecture Outline 10-1 - Energy transfer, Chemical Reactions,...

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Energy transfer, Chemical Reactions, Enzymes Reading assignment: Chapter 8, pages 142–161. Metabolism Two types Catabolic and Anabolic reactions The Driving Force Energy: Definition Kinetic vs. Potential energy Thermodynamics: First and Second Law of Thermodynamics Chemical reactions Exergonic reactions: Energy is released Think of how energy is Excised from the reaction Endergonic reactions: Energy is consumed Energy is funneled Into the reaction Coupled reactions: Energy is exchanged within the reaction system Excised energy from the exergonic stage is put into the endergonic stage Adenosine Triphosphate (ATP) Structure Adenine + Ribose + 3 Phosphates The ATP cycle Energy from catabolism forms ATP Energy for cell functions is provided by ATP Enzymes Definition How do enzymes work? Substrate interaction Factors affecting enzyme activity temperature, pH Control of enzyme function Allosteric regulation Feedback inhibition Coopertivity GLOSSARY Metabolism:
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Lecture Outline 10-1 - Energy transfer, Chemical Reactions,...

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