Indicate whether each statement is true or false. Free energy in a chemical reaction is lower with an enzyme than without one. With an enzyme, the formation of reactants is favored over the formation of products. Not all chemical catalysts are enzymes. Free energy in a chemical reaction is lower with an enzyme than without one.
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Few molecules have enough energy to activate a chemical reaction on their own. An enzyme increases the activation energy necessary for the reaction to begin. A catalyst speeds up the rate of a reaction. An activation barrier must be overcome even in reactions that release energy.
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After an enzyme has been used, it may act as a catalyst for another reaction. Enzymes lower the level of the activation barrier. Catalysts are not permanently changed or depleted during the course of a reaction. Enzymes are proteins that act as catalysts.
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Answer true or false to the following statements regarding enzyme-catalyzed reactions. If false give explanation why Enzymes can increase the rate of endergonic as well as exergonic reactions. Enzymes bind to their substrates to stabilize them for faster reactions. Enzymes only bind to transition states and never to substrates. Binding of enzyme inhibitors prevents substrate binding to the enzyme. The rate of an enzyme catalyzed reaction will slow as it comes to equilibrium.
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