22260142-AP-Bio-Multiple-Choice-Test - MULTIPLE CHOICE...

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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? 1) ___E____ A)catalysis B)anabolism C)dehydration D)metabolism E)catabolism 2)Which of the following is a statement of the first law of thermodynamics? 2) __A_____ A)Energy cannot be transferred or transformed. B)The entropy of the universe is constant. C)Energy cannot be created or destroyed. D)The entropy of the universe is decreasing. E)Kinetic energy is stored energy that results from the specific arrangement of matter. 3)Whenever energy is transformed, there is always an increase in the 3) ___E____ A)free energy of the system. B)entropy of the system. C)enthalpy of the universe. D)free energy of the universe. E)entropy of the universe. 4)Which of the following is considered an open system? 4) ____ A ___ A)an organism B)a sealed terrarium C)liquid in a corked bottle D)food cooking in a pressure cooker 5)Why is ATP an important molecule in metabolism? 5) ____B___ A)Its terminal phosphate group contains a strong covalent bond that when hydrolyzed releases free energy. B)It provides energy coupling between exergonic and endergonic reactions. C)Its hydrolysis provides an input of free energy for exergonic reactions. D)Its terminal phosphate bond has higher energy than the other two. E)A, B, C, and D 6)Which of the following statements is (are) true about enzyme-catalyzed reactions? 6) ___B____ A)The free energy change of the reaction is opposite from the reaction in the absence of the enzyme. B)The reaction is faster than the same reaction in the absence of the enzyme. C)The reaction always goes in the direction toward chemical equilibrium. D)A and B only E)A, B, and C 7)How can one increase the rate of a chemical reaction? 7) ____B__ A)Decrease the concentration of the reactants. B)Add a catalyst. C)Increase the entropy of the reactants. D)Increase the activation energy needed. E)Cool the reactants. 8)Sucrose is a disaccharide, composed of the monosaccharides glucose and fructose. The hydrolysis of sucrose by the enzyme sucrase results in 8) ___ A ___ A)breaking the bond between glucose and fructose and forming new bonds from the atoms of water. B)bringing glucose and fructose together to form sucrose. C)utilization of water as a covalent bond is formed between glucose and fructose to form sucrase. D)the release of water from sucrose as the bond between glucose and fructose is broken. E)production of water from the sugar as bonds are broken between the glucose monomers.
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9)Which of the following statements regarding enzymes is true? 9) __A_____ A)Enzymes decrease the free energy change of a reaction. B)Enzymes prevent changes in substrate concentrations.
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22260142-AP-Bio-Multiple-Choice-Test - MULTIPLE CHOICE...

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