Biology: The Unity and Diversity of Life (Looseleaf)
15th Edition
ISBN: 9781337408417
Author: STARR
Publisher: CENGAGE L
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Chapter 5, Problem 4SQ
Summary Introduction
Introduction: Activation energy is the minimum amount of energy that is essential to start a reaction. Endergonic reaction describes the net input of free energy to proceed, while exergonic reaction describes the reaction that ends with a net release of free energy. Gibbs free energy for the exergonic reaction is negative and for endergonic reaction, it is positive. In a process called catalysis, the enzyme makes a reaction faster than its own. The enzyme remains unaffected in this reaction.
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Chapter 5 Solutions
Biology: The Unity and Diversity of Life (Looseleaf)
Ch. 5 - One Tough Bug The genus Ferroplasma consists of a...Ch. 5 - One Tough Bug The genus Ferroplasma consists of a...Ch. 5 - One Tough Bug The genus Ferroplasma consists of a...Ch. 5 - Which of the following statements is not correct?...Ch. 5 - ________ is lifes primary source of energy. a....Ch. 5 - Prob. 3SQCh. 5 - Prob. 4SQCh. 5 - Prob. 5SQCh. 5 - ______ are always changed by participating in a...Ch. 5 - Name one environmental factor that typically...
Ch. 5 - Prob. 8SQCh. 5 - A molecule that donates electrons becomes...Ch. 5 - All antioxidants ________. a. prevent other...Ch. 5 - Solutes tend to diffuse from a region where they...Ch. 5 - Prob. 12SQCh. 5 - A transport protein requires ATP to pump sodium...Ch. 5 - Immerse a human red blood cell in a hypotonic...Ch. 5 - Match each tern with its most suitable...Ch. 5 - Beginning physics students are often taught the...Ch. 5 - Describe diffusion in terms or entropy.Ch. 5 - What is a redox reaction?Ch. 5 - The enzyme trypsin is sold as a dietary...Ch. 5 - Catalase combines two hydrogen peroxide molecules...
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- Which statements concerning free energy change are true?a. Free energy change is a measure of the rate of a reaction.b. Free energy change is a measure of the maximum amountof work available from a reaction.c. Free energy change is a constant for a reaction under anyconditions.d. Free energy change is related to the equilibrium constantfor a specific reaction.e. Free energy change is equal to zero at equilibrium.arrow_forwardWhich of the following is true for all exergonic reactions? Group of answer choices A. The reactions are nonspontaneous B. A net input of energy from the surroundings is required for the reactions to proceed C. Some reactants will be converted to products D. The products have more total energy than the reactants E. The reaction proceeds with a net release of free energyarrow_forwardThe reactions that have no net free energy change is . a. reversible O b. equilibrium O c. allosteric O d. endergonic e. kineticarrow_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_forwardChoose in the options what do enzymes do for the activation of energy of the reaction -Ea, given the theory of collision? a. enzymes will bind the reactants b. enzyme will raise temperature to incease the level of energy level. c. enzyme will provide an alternative reaction pathwayarrow_forward
- The active site _______________. a. is the compound that an enzyme reacts with during the chemical reaction.b. is where the reactants bind.c. is another term for “substrate.”d. is the term for an enzyme that has returned to its original state after achemical reaction.arrow_forwardDefine the following terms: a. catalytic dyad b. transition state theory c. hydroxide ion catalysis d. reaction intermediate e. proximity and orientation effectsarrow_forwardWhich of the following statement about the enzyme thermodynamics is TRUE? a. Enzymes increase the activation barrier (∆G cat) of the products b. Enzymes decrease the activation barrier (∆G cat) of the products c. Enzymes decrease the free energy (∆G) of the products d. Enzymes decrease the free energy (∆G) of the reactants e. Enzymes increase the activation barrier (∆G cat) of the reactantsarrow_forward
- Which of the followingdescribe superior properties of enzymes (biological catalysts) over traditional chemical catalysts? a. They are mostly and generally operative under mild temperature, pressure, and pH conditions b. They are regulated only by substrate concentration c. They do not effect the reaction equilibrium, but lower the reaction's activation energy d. They are recycled at the end of the reaction Choose all that applyarrow_forwardIn an endergonic reaction, activation energy is a bit like_______ . a. a burst of speed b. coasting downhill c. an energy hill d. putting on the brakesarrow_forwardthe energy released by ___ reactions is used to run ________ reactions A. ENDERGONIC; ENDERGONIC B. EXERGONIC; ENDERGONIC C. EXERGONIC; EXERGONIC D. ENDERGONIC; EXERGONICarrow_forward
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