BIOLOGY (LOOSELEAF)-W/CONNECT
12th Edition
ISBN: 9781260692181
Author: Raven
Publisher: MCG
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Chapter 6, Problem 5U
Summary Introduction
Introduction:
The atoms present in the molecules are bound together by the energies. The energy is required to break down the bonds present between the atoms in a molecule. The atomic motions of the atoms are increased by the heat energy.
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What 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 reaction
Which of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)?
A.
Enzymes bind substrates to raise their effective concentration
B.
Enzymes enhance the rate of a chemical reaction
C.
Enzymes catalyze chemical reactions by destabilizing transition states
D.
Side chains of protein provide reactive groups that facilitate reaction
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Enzymes shift the equilibrium of a chemical reaction to favor product formation
Choose 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 pathway
Chapter 6 Solutions
BIOLOGY (LOOSELEAF)-W/CONNECT
Ch. 6.1 - Prob. 1LOCh. 6.1 - Prob. 2LOCh. 6.1 - Describe the nature of redox reactions.Ch. 6.2 - Explain the laws of thermodynamics.Ch. 6.2 - Prob. 2LOCh. 6.2 - Contrast the course of a reaction with and without...Ch. 6.3 - Describe the role of ATP in short-term energy...Ch. 6.3 - Prob. 2LOCh. 6.4 - Discuss the specificity of enzymes.Ch. 6.4 - Explain how enzymes bind to their substrates.
Ch. 6.4 - Prob. 3LOCh. 6.5 - Prob. 1LOCh. 6.5 - Prob. 2LOCh. 6.5 - Prob. 3LOCh. 6 - Prob. 1DACh. 6 - A covalent bond between two atoms represents what...Ch. 6 - During a redox reaction the molecule that gains an...Ch. 6 - Prob. 3UCh. 6 - A spontaneous reaction is one in which a. the...Ch. 6 - Prob. 5UCh. 6 - Which of the following is NOT a properly of a...Ch. 6 - Where is the energy stored in a molecule of ATP?...Ch. 6 - Prob. 1ACh. 6 - Which of the following statements is NOT true...Ch. 6 - Prob. 3ACh. 6 - Prob. 4ACh. 6 - Enzymes have similar responses to both changes in...Ch. 6 - Prob. 6ACh. 6 - Examine the graph showing the rate of reaction...Ch. 6 - Phosphofructokinase functions to add a phosphate...
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Similar questions
- What are enzymes? A. Enzymes are biological catalysts made up of amino acids B. Enzymes are biological catalysts that create an environment to lower the energy expenditure to break "old" bonds. C. Enzymes are biological catalysts that provide a mechanism to make unfavorable reactions proceed. D. Enzymes are biological catalysts that require cofactors to effect catalysis E. Enzymes are biological catalysts that provide the means to channel chemical energy to allow biological transformations to occurarrow_forwardUse graphs to illustrate enzyme activity as a function of the following: a. substrate concentration b. enzyme concentration c. pH d. temperaturearrow_forwardHow does an enzyme affect a chemical reaction? Select all that apply. A. Lowers the activation energy B. Decreases the rate of the reaction C. Increases the activation energy D. Increases the rate of the reactionarrow_forward
- Discuss how changes in free energy in a reaction are related to changes in entropy and enthalpy.arrow_forwardIf a reaction is spontaneous, does that mean it will be fast?arrow_forwardWhich statement defines a coenzyme? a. An enzyme precursor b. A unit consisting of an enzyme bound to reactants plus ATP c. An inactive enzyme that becomes functional upon contact with specific cofactors d. The active part of an enzyme e. An organic molecule closely associated with enzymesarrow_forward
- Enzymes speed up a reaction by: Select one: a. Decreasing the amount of activation energy needed to drive the reaction b. Change the amount of energy of the reactant c. Increasing the amount of activation energy needed to drive the reaction d. Change the amount of energy of the productsarrow_forwardIn chemical reactions involving two or more substrates, how can mere binding of substrates to an enzyme active site affect the rate of a reaction?arrow_forwardMake a graphical representation of activation energy and change of free energy in a reaction and compare it with a graph showing the work of enzyme in lowering the activation energy of a reaction.arrow_forward
- What is the active site of an enzyme? A. Specific molecule that acts as the reactant in an enzyme-mediated reaction B. An ion or nonprotein organic molecule that associates with an enzyme and is necessary for its function C. The part of an enzyme where substrates bind and a reaction occurs D. A specific ion or molecule that binds to an enzyme to enhance or inhibit its activityarrow_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_forwardDistinguish a term for a chemical reaction that has a positive ΔG. * A. Endergonic B. Exergonic C. Catabolism D. Metabolismarrow_forward
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