sept27post - 9/27/10 1. Efficient energy-coupled reactions...

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9/27/10 1. Efficient energy-coupled reactions 2. Enzymes are biological catalysts 3. Induced fit model of enzyme action .
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Free energy change ! G measured as the final free energy minus the initial free energy. Thus, if the products contain less free energy than the reactants, then ! G is negative.
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energy-coupling reactions (trap the energy released from an exergonic process to drive an endergonic process) Process A: ATP --> ADP + P releases 7 kcal/mol Process B: glucose molecules move across a membrane from low to high concentration requires 5 kcal/mol 1. Process A can occur without energy being added to the system. A) True B) False 2. Energy given off in reaction A is sufficient to drive reaction B. A) True B) False
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ATP > ADP + P releases 7.3 kcal/mol Reaction B: ADP + P > ATP requires 7.3 kcal/mol 3. Energy given off in reaction A is sufficient to drive reaction B. A) True B) False Second Law of Thermodynamics - during energy transformation, a system tends to increase in
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sept27post - 9/27/10 1. Efficient energy-coupled reactions...

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