Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 8, Problem 7TYKF
_______ inhibitors that decrease an enzyme’s activity by binding to the active site
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Enzyme activity can be inhibited by inhibitors. Inhibitors can be bio-molecules or
chemically synthesized molecules. Compare with explanation about the mechanism of
competitive and non-competitive inhibitors.
_____________ allosteric effects of enzymes involve ligands that are different from substrate molecules.
An inhibitor was added to an enzyme and the expected rate of the reaction was not detected and the substrate was not utilized at all. This inhibitor is (choose one answer only):
Is un-competitive, meaning the inhibitor binds to a site near the active site.
Is competitive, meaning the inhibitor binds directly to the same active site as the subtrate.
Is non-competitive, meaning the inhibitor binds to site other than the active site as the subtrate.
Is irreversible, meaning the inhibitor binds covalently to the enzyme keeping the enzyme inactive permanently.
Chapter 8 Solutions
Study Guide for Campbell Biology
Ch. 8 - Complete the following concept map that summarizes...Ch. 8 - Complete the following table to indicate how the...Ch. 8 - Develop a concept map on free energy and G. The...Ch. 8 - Prob. 4IQCh. 8 - Prob. 5IQCh. 8 - In the following graph of an exergonic reaction...Ch. 8 - In the following diagram of a catalytic cycle,...Ch. 8 - Return to the diagram in Interactive Question 3.7,...Ch. 8 - Both ATP and ADP serve as regulators of enzyme...Ch. 8 - What is the relationship between the concept of...
Ch. 8 - What role do enzymes play in metabolism?Ch. 8 - ________ the totality of an organisms chemical...Ch. 8 - _______ pathways that use energy to synthesize...Ch. 8 - Prob. 3TYKFCh. 8 - _______ the most random form of energyCh. 8 - _______ term for the measure of disorder or...Ch. 8 - Prob. 6TYKFCh. 8 - _______ inhibitors that decrease an enzymes...Ch. 8 - Prob. 8TYKFCh. 8 - Prob. 9TYKFCh. 8 - Prob. 10TYKFCh. 8 - Catabolic and anabolic pathways are often coupled...Ch. 8 - Which statement most closely reflects the first...Ch. 8 - When a cell breaks down glucose, only about 34% of...Ch. 8 - Prob. 4TYKCh. 8 - Prob. 5TYKCh. 8 - Prob. 6TYKCh. 8 - One way in which a cell maintains metabolic...Ch. 8 - Prob. 8TYKCh. 8 - Prob. 9TYKCh. 8 - What is meant by an induced fit? a. The binding of...Ch. 8 - In an experiment, changing the pH from 7 to 6...Ch. 8 - Prob. 12TYKCh. 8 - Penicillin binds to the active site of an enzyme...Ch. 8 - Prob. 14TYKCh. 8 - Prob. 15TYKCh. 8 - Which line in the diagram indicates the G of the...Ch. 8 - Prob. 17TYKCh. 8 - Prob. 18TYKCh. 8 - Prob. 19TYKCh. 8 - Prob. 20TYK
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- Explain how an inhibitor can disrupt an enzyme’s action without binding to the active site.arrow_forwardClassify the inhibitor characteristics according to one of three types of inhibition: reversible competitive, reversible noncompetitive, or irreversible. Reversible competitive inhibitor binds noncovalently at site other than active site 0° Reversible noncompetitive inhibitor structure resembles substrate structure inhibitor does not alter the maximum reaction rate Irreversible inhibitor binds.covalently and permanently at site other than active sitearrow_forwardThe inhibition that make permanent damage to an enzyme is called: O Noncompetitive O Competitive O Reversible Irreversiblearrow_forward
- Inhibitors are compounds capable of blocking the catalytic process. Outline with the use of graphs and equations in illustrating the different modes of action of enzyme inhibitors.arrow_forwardWhy is an inhibitor that mimics the transition state more effective enzyme inhibition than an inhibitor that mimics the substrate? Enter your answer herearrow_forwardThe site where a noncompetitive inhibitor binds to an enzyme is called: Active site Receptor site Coenzyme O Allosteric site Enzyme linked receptors:arrow_forward
- Please select all of the following statements that are true. Cofactors involve the use of vitamins to assist enzymes Competitive inhibitors bind to the same active site as the substrate. When the substrate binds to the enzyme the reaction rate increases. Non-competitive inhibitors can act as both inhibitors and activators.arrow_forwardWhich of the following are characteristics of catabolic metabolic pathways? (Choose all correct answers). Overall oxidation of initial substrates so redox reactions involve use of NAD+ as oxidizing agent, converted to NADH. Large initial substrates are broken down to smaller final products. Overall reduction of intial substrates so redox reactions involve use of NADPH as reducing agent, converted to NADP+. The pathways are overall exergonic (negative delta G). Net production of ATP as a result of the pathway. Essentially irreversiblearrow_forwardRefer to image below and answer the following: 1. What is the optimum temperature (degrees celsius) for the enzyme activity? 2. At what temperature when the emzyme was totally denatured?arrow_forward
- Increasing the number of inhibitors will increase the overall rate of the reaction. True or falsearrow_forward"An enzyme reaches a maximum rate at high substrate concentration because it has a fixed number of active sites where substrate binds", is true or false.arrow_forwardOccasionally the “delicate” nature of enzymes is referred to. Explain why this adjective is appropriate.arrow_forward
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