10BB lecture 10-14-09 enzymes I

10BB lecture 10-14-09 enzymes I - Test 2 on Monday,...

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Test 2 on Monday, 10-19-09, 6-8PM, UTC 2.112A Approximate number of m/c questions per chapter for Test 2 Chapter number of questions 25, 26 ~2 27 ~2 6 ~8 7 ~6 11 ~7 48 ~3 8 ~7
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Chapter 8 (pp.151-156) Enzymes Learning objectives: •From an equilibrium constant (K eq ), be able to determine what it implies about a reaction and how it relates to the Gibbs free energy value. Describe the structural and functional characteristics of an enzyme Draw curves showing the effect of enzymes on endergonic and exergonic rx. Understand how the rate of an enzyme-catalyzed reaction is affected by concentration of substrate, concentration of enzyme, temperature, pH Explain what is meant by the induced-fit model of enzyme function.
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Free Energy, Stability, and Equilibrium Free energy is a measure of a system’s instability, its tendency to move to a more stable state During a spontaneous change, free energy de creases and the stability of a system in creases Equilibrium is a state of maximum stability A process is spontaneous and can perform work only when it is moving to equilibrium. REVIEW [Fill in the appropriate word: increases, decreases; stability, instability; to, from ]
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Exergonic and Endergonic Reactions in Metabolism An exergonic reaction proceeds with a net release of free energy and is spontaneous An endergonic reaction absorbs free energy from its surroundings and is non-spontaneous REVIEW [Fill in the appropriate word: spontaneous; non-spontaneous ]
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Chemical equilibrium is the balance between forward and reverse reactions. At equilibrium the concentration of reactants and products remain constant as measured by K eq ( equilibrium constant ). K
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This note was uploaded on 01/20/2010 for the course BIO 50415 taught by Professor Batterton during the Fall '09 term at University of Texas at Austin.

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10BB lecture 10-14-09 enzymes I - Test 2 on Monday,...

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