Inquiry Into Life (16th Edition)
16th Edition
ISBN: 9781260231700
Author: Sylvia S. Mader, Michael Windelspecht
Publisher: McGraw Hill Education
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Textbook Question
Chapter 6, Problem 10A
Enzymes catalyze
a. lowering the energy of activation in the reaction
b. raising the energy of activation in the reaction
c. increasing entropy
d. increasing the free energy of the products
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Enzymes catalyze a chemical reaction by
A. decreasing the amount of ATP required to activate a reaction
B. increasing the amount of ATP required to activate a reaction
C. slowing down the reaction to obtain more products
D. increasing the reaction to obtain more products
E. decreasing the amount of ATP required and obtaining more products.
Substance A is converted to substance B in a metabolic reaction. Which statement best describes the role of enzyme during this reaction?
A. It dissolves substance A in the reaction medium.
B. It speeds up the reaction without it being consumed in the process.
C. It provides energy to the reaction system
D. It adjusts the pH of the reaction medium.
Which of these statements about enzymes is true? a,Most proteins are enzymes. b.Most enzymes are proteins. c.Enzymes are changed by the reactions they catalyze. d.The active sites of enzymes have little specificity for substrates.
Chapter 6 Solutions
Inquiry Into Life (16th Edition)
Ch. 6.1 - Describe the different forms of energy.Ch. 6.1 - Prob. 2LOCh. 6.1 - Explain why energy is not recycled in an...Ch. 6.1 - Prob. 2CYPCh. 6.2 - Identify how the terms anabolic, catabolic,...Ch. 6.2 - Prob. 2LOCh. 6.2 - Prob. 1CYPCh. 6.2 - Prob. 2CYPCh. 6.3 - Prob. 1LOCh. 6.3 - Prob. 2LO
Ch. 6.3 - Prob. 3LOCh. 6.3 - Do you feel it is ethical to use dangerous...Ch. 6.3 - Prob. 2QTCCh. 6.3 - Summarize why enzymes are needed in biochemical...Ch. 6.3 - Prob. 2CYPCh. 6.3 - Prob. 3CYPCh. 6.4 - Prob. 1LOCh. 6.4 - Prob. 2LOCh. 6.4 - Prob. 1CYPCh. 6.4 - Prob. 2CYPCh. 6 - Prob. S1.1BYBCh. 6 - Prob. S2.7BYBCh. 6 - Prob. S4.2BYBCh. 6 - The fact that energy transformations increase the...Ch. 6 - Prob. 2ACh. 6 - Prob. 3ACh. 6 - Prob. 4ACh. 6 - Prob. 5ACh. 6 - Prob. 6ACh. 6 - Prob. 7ACh. 6 - Prob. 8ACh. 6 - Prob. 9ACh. 6 - Enzymes catalyze chemical reactions by which of...Ch. 6 - Prob. 11ACh. 6 - Prob. 12ACh. 6 - Prob. 1TCCh. 6 - Prob. 2TCCh. 6 - Prob. 3TC
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- Which statement best summarizes the structure of an enzyme before and after it catalyzes a reaction? a.) Its structure is the same. b.) It gains a water molecule in the reaction. c.) It loses a carbon atom in the reaction. d.) It loses a hydrogen atom in the reaction,arrow_forwardWhich statement is true regarding the function of a catalyst in a chemical reaction? a) A catalyst increases the rate of a reaction. b) A catalyst provides an alternate mechanism for the reaction. c) A catalyst is not consumed by the reaction. d) All of the above are true.arrow_forwardWhich of the following accurately describes how an enzyme functions? a. reduces the energy content of the products b. allows for the exothermic reaction of materials that are usually endothermic c. changes the reaction mechanism effectively reducing the activation energy d. shifts the equilibrium for the reactionarrow_forward
- Which of the following is NOT true of enzymes? a) They may interact chemically with their substrates b) They may catalyze a reaction in both forward and reverse directions. c) They may alter Keq for the reaction that they catalyze. d) They may decrease the entropy of their substrates.arrow_forwardWhich of the following statement regarding enzymes is false? a.) they speed up reaction rates b.) they work within narrow temperature and pH ranges c.) The active site binds the substarate d.) They are consumed in the reactions they catalyzearrow_forwardWhich of the following is not true about enzymes: a. They increase ΔG of reactions. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.arrow_forward
- Which two of the following apply to the products of an exergonic reaction? A. Have less energy than the reactants B. Are less ordered than the reactants C. Are more ordered than the reactants D. Have more energy than the reactantsarrow_forwardWhich of the following is TRUE about the enzymatic catalysis of a chemical reaction? A. It increases the energy of the transition state B. It decreases the free energy ∆G so that a reaction can proceed spontaneously C. It decreases the energy of the transition state D. It increases the forward and reverse ratesarrow_forwardWhat is activation energy? a. The thermal energy associated with random movements of molecules b. The energy released through breaking chemical bonds c. The difference in free energy between reactants and products d. The energy required to initiate a chemical reactionarrow_forward
- When you heat a solution past the optimum for an enzyme? A. the active site permanently binds substrate via covalent bonding B. the enzyme stiffens and slows down C. the enzyme starts to denaturearrow_forwardWhich of the following statements regarding enzymes is true? A. Enzymes decrease the free energy change of a reaction. B. Enzymes cjange the direction of chemical reaction. C. Enzymes prevent changes in substrate concentrations. D. Enzymes increase the rate of a reaction. E. Enzymes are permanently altered by the reactions they catalyze.arrow_forwardEnzymes are organic catalysts that (a) alter the direction in which a chemical reaction proceeds, (b) determine the nature of the products of a reaction, (c) increase the speed of a chemical reaction, (d) are essential raw materials for a chemical reaction that are converted into some of its products.arrow_forward
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