Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 6, Problem 15TYK
Summary Introduction
To review:
Examining the idea of researchers (that an enzyme and its substrate fit together like a lock and key but that the products do not fit the enzyme) with reversible reactions.
Introduction:
Enzymes are biocatalyst that increase the
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Chapter 6 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 6.1 - Prob. 1SBCh. 6.1 - In thermodynamics, what is meant by an isolated...Ch. 6.2 - Prob. 1SBCh. 6.2 - Prob. 2SBCh. 6.2 - Distinguish between exergonic and endergonic...Ch. 6.3 - Prob. 1SBCh. 6.3 - How are coupled reactions important to cell...Ch. 6.4 - How do enzymes increase the rates of the reaction...Ch. 6.4 - Can enzymes alter the G of a reaction?Ch. 6.5 - Prob. 1SB
Ch. 6.5 - What is the difference between competitive and...Ch. 6.5 - Prob. 3SBCh. 6.6 - Prob. 1SBCh. 6 - The capacity to do work best defines: a metabolic...Ch. 6 - The assembly of proteins from amino acids is best...Ch. 6 - When two glucose molecules react to form maltose:...Ch. 6 - When glucose reacts with ATP to form...Ch. 6 - In the following graph: A represents the product....Ch. 6 - Which of the following methods is not used by...Ch. 6 - In an enzymatic reaction: a. the enzyme leaves the...Ch. 6 - Which of the following statements about the...Ch. 6 - Which of the following statements about inhibition...Ch. 6 - Which of the following statements is incorrect? a....Ch. 6 - Prob. 11TYKCh. 6 - Discuss Concepts Trace the flow of energy through...Ch. 6 - Prob. 13TYKCh. 6 - Prob. 14TYKCh. 6 - Prob. 15TYKCh. 6 - Prob. 16TYKCh. 6 - Prob. 17TYKCh. 6 - Prob. 1ITDCh. 6 - Prob. 2ITDCh. 6 - Prob. 3ITD
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- Consider the following free energy diagram for an uncatalyzed and enzyme-catalyzed reaction. Select all the statements that are true. Without enzyme With enzyme A+B Time AB O a. The rate of the enzyme catalyzed reaction is faster than the uncatalyzed reaction O b. The change in free energy for the reaction is greater in the catalyzed reaction, compared to the uncatalyzed reaction O c. The enzyme stabilizes the transition state for the reaction Od. The reaction is exergonic е. The reaction is now spontaneous due to the addition of enzyme Released Energyarrow_forwardWhich of the following is TRUE concerning the induced fit model of enzyme catalysis? * (One correct answer only) A. The active site can be influenced by molecules binding elsewhere on an enzyme B. The initial binding of enzyme and substrate is the most tightly bound conformation C. The induced fit must occur prior to the initial binding of enzyme and substrate in order for the reaction to proceed D. The binding of enzyme and substrate is weakest in the transition statearrow_forwardUsing an energy diagram, show why the lock-and-key model could lead to an inefficient enzyme mechanism. Hint: Remember that the distance to the transition state must be minimized for an enzyme to be an effective catalyst.arrow_forward
- Consider the following free energy diagram for an uncatalyzed and enzyme-catalyzed reaction. Select all the statements that are true. Without enzyme With enzyme A+B Time AB Oa. The reaction is now spontaneous due to the addition of enzyme b. The rate of the enzyme catalyzed reaction is faster than the uncatalyzed reaction O C. The reaction is exergonic O d. The change in free energy for the reaction is greater in the catalyzed reaction, compared to the uncatalyzed reaction e. The enzyme stabilizes the transition state for the reaction Released Energy pesarrow_forwardConsider a reaction in which reactants X and Y combine to form the product Z. The diagram below compares the reaction coordinates for the catalyzed and uncatalyzed pathways of this reaction. B. X+Y Reaction Coordinate What does letter B represent? O Letter B represents the activation energy of the uncatalyzed reaction pathway. Letter B represents the energy difference between the reactants and products for the uncatalyzed pathway. O Letter B represents the activation energy of the catalyzed reaction pathway. Letter B represents the energy difference between the reactants and products for the catalyzed pathway. Energyarrow_forwardEnzyme kinetics uses math to quantify all of the following, except: a. An enzyme's substrate affinity b. None; all the other choices are correct OC. An enzyme's catalytic power Od. An enzyme's stabilityarrow_forward
- PREDICT In the following reaction series, which enzyme(s) is/are most likely to have an allosteric site to which the end product E binds? (a) enzyme 1 (b) enzyme 2 (c) enzyme 3 (d) enzyme 4 (e) enzymes 3 and 4arrow_forwardExamine which of the following statement are FALSE about enzymes. * (Please choose one correct answer) A. The enzyme specificity of binding depends on the precisely defined arrangement of atoms in an active site suggesting for the lock-and-key mechanism B. The enzyme in an enzyme catalyzed reaction increases the rate at which the substrate is converted into product while lowering energy of activation C. First order reaction means S < Km while when S > Km means its zero-order reaction D. Glucose oxidase catalyzes the oxidation of β-D-glucose but not α-D-glucose is an example of absolute specificity E. One of the enzymes involved in the transport of oxygen from the lungs to the capillaries of the tissue requires Fe+ for catalysis. Under conditions of iron deficiency wherein the enzyme my lack iron, the enzyme would be referred to as the holoenzyme.arrow_forwardThe graph presented here depicts the activation energy, or the amount of energy needed for a reaction to proceed, with and without an enzyme. a. Which reaction requires more energy to proceed—the one with or without an enzyme? How do you know? b. Is this reaction anabolic or catabolic? How do you know?arrow_forward
- When the product of reaction \\( A \\) becomes the reactant of reaction \\( B \\), the metabolic pathway is cyclic divergent bidirectional convergent lineararrow_forwardWhich of the following statements are true for BOTH the "transition state" and an "intermediate" of reaction? (This is a multi-select question, select all that apply.). Both are only observed in enzyme-catalyzed reactions. Both can be converted to product(s) or might decompose back to the reactant(s). Neither are part of the "net equation" for the reaction. Both contain covalent bonds are in the process of breaking and/or forming. Both are part of every chemical reaction. (i.e. the mechanisms of all chemical reactions, whether enzyme catalyzed or not, will have involve both a transition state and an intermediate).arrow_forwardSuppose an enzyme and its substrate obey the lock and key model of enzyme catalysis. Which of the following would be true of the enzyme?Select all that apply A.the active site of the enzyme must be rigid B.the active site of the enzyme must be flexible C.only one substrate could be converted to product by the enzyme D.the enzyme could bind different substrates if the substrates shared a common motif somewhere in their structures E.the entire enzyme must be rigidarrow_forward
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