bioquiz3 - E make reactions more exergonic Question 3 of 4...

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Question 1 of 4 2.0 Points When salt crystals dissolve in water, the salt ions acquire energy and go into a higher state of enthalpy (the temperature of the solution decreases). This means that___ A. for salt crystals to dissolve spontaneously in water, the increase in entropy must be larger than the increase in enthalpy. B. salt crystals cannot dissolve spontaneously in water. C. the dissolution of salt crystals in water must be coupled to an exergonic reaction. D. salt crystals dissolving in water is an endergonic reaction. Catalysts__ A. are not used up in the reaction. B. provide activation energy to the reactants
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C. alter the equilibrium point of a reaction. D. are proteins.
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Unformatted text preview: E. make reactions more exergonic. Question 3 of 4 2.0 Points A small molecule binding to the active site of an enzyme inhibits its activity. This molecule may be__ A. a competitive inhibitor. B. an allosteric negative regulator. C. a cofactor. D. a prosthetic group. E. any of the above. Question 4 of 4 2.0 Points Enzymes can increase the rate of reactions by__ A. changing shape upon binding the substrate. B. stretching or stressing the bonds in a bound substrate molecule. C. binding two substrate molecules in an optimal orientation for the reaction to occur between them. D. any of the above methods. E. none of the above methods....
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bioquiz3 - E make reactions more exergonic Question 3 of 4...

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