Introduction To General, Organic, And Biochemistry
12th Edition
ISBN: 9781337571357
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 22, Problem 23P
5 Which of the following is a correct statement describing the induced-fit model of enzyme action? Substrates fit into the active site:
(a) because both are exactly the same size and shape.
(b) by changing their size and shape to match those of the active site.
(c) by changing the size and shape of the active site upon binding.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
3. Some medications permanently inactivate their target enzyme by forming a covalent bond to
an amino acid in the enzyme's active site. Aspirin is one example of a pharmaceutical that uses
this type of mechanism. So is penicillin. As you saw in the last chapter, the active portion of
penicillin is the B-lactam ring. Penicillin forms a covalent bond to serine in the active site
transpeptidase, an enzyme that is essential for forming the bacterial cell wall. Propose a
mechanism for the inactivation of transpeptidase by penicillin and show the final product of
the reaction.
NH
OH
CH3
CH2
CH3
backbone
penicillin
serine
An enzyme catalyzes the hydrolysis of an ester with a
certain activity, but this activity is lost in a 3 M urea
solution. What is the most likely explanation for the loss
of activity?
(A) Urea binds to the active site of the enzyme
competitively with the substrate.
(B) Urea causes the cleavage of the peptide bonds in the
enzyme.
(C) Urea causes the enzyme to denature and lose its
specific three-dimensional shape.
(D) Urea reacts with disulfide bonds in the enzyme.
explain each graph above about enzymes and the factors affecting enzymatic activity.
Chapter 22 Solutions
Introduction To General, Organic, And Biochemistry
Ch. 22.1 - Prob. 22.1QCCh. 22.2 - Prob. 22.2QCCh. 22.3 - Prob. 22.3QCCh. 22.4 - Which of the following is true regarding enzymes?...Ch. 22.5 - Match the description of the enzyme process with...Ch. 22 - What is the difference between a catalyst and an...Ch. 22 - What are ribozymes made of?Ch. 22 - Would a lipase hydrolyze two triglycerides, one...Ch. 22 - Compare the activation energy in uncatalyzed...Ch. 22 - Prob. 5P
Ch. 22 - Prob. 6PCh. 22 - Prob. 7PCh. 22 - Monoamine oxidases are important enzymes in brain...Ch. 22 - Prob. 9PCh. 22 - 0 What kind of reaction does each of the following...Ch. 22 - Prob. 11PCh. 22 - In most enzyme-catalyzed reactions, the rate of...Ch. 22 - 5 At a very low concentration of a certain...Ch. 22 - 6 If we wish to double the rate of an...Ch. 22 - 7 A bacterial enzyme has the following...Ch. 22 - 8 The optimal temperature for the action of...Ch. 22 - 9 The activity of pepsin was measured at various...Ch. 22 - Prob. 18PCh. 22 - Prob. 19PCh. 22 - Prob. 20PCh. 22 - Prob. 21PCh. 22 - 4 What kind of chemical reaction occurs most...Ch. 22 - 5 Which of the following is a correct statement...Ch. 22 - Prob. 24PCh. 22 - 7 Enzymes are long protein chains, usually...Ch. 22 - Prob. 26PCh. 22 - Prob. 27PCh. 22 - 0 Can the product of a reaction that is part of a...Ch. 22 - 1 What is the difference between a zymogen and a...Ch. 22 - 2 The enzyme trypsin is synthesized by the body in...Ch. 22 - Prob. 31PCh. 22 - Prob. 32PCh. 22 - Prob. 33PCh. 22 - Prob. 34PCh. 22 - Prob. 35PCh. 22 - Prob. 36PCh. 22 - Prob. 37PCh. 22 - Prob. 38PCh. 22 - 1 After a heart attack, the levels of certain...Ch. 22 - Prob. 40PCh. 22 - Prob. 41PCh. 22 - Prob. 42PCh. 22 - 5 Chemists who have been exposed for years to or...Ch. 22 - 6 Which enzyme preparation is given to patients...Ch. 22 - 7 Chymotrypsm is secreted by the pancreas and...Ch. 22 - Prob. 46PCh. 22 - Prob. 47PCh. 22 - Prob. 48PCh. 22 - Prob. 49PCh. 22 - Prob. 50PCh. 22 - Prob. 51PCh. 22 - Prob. 52PCh. 22 - Prob. 53PCh. 22 - Prob. 54PCh. 22 - Prob. 55PCh. 22 - Prob. 56PCh. 22 - Prob. 57PCh. 22 - Prob. 58PCh. 22 - Prob. 59PCh. 22 - Prob. 60PCh. 22 - 1 Food can be preserved by inactivation of enzymes...Ch. 22 - Prob. 62PCh. 22 - 3 Would you expect to find active digestive...Ch. 22 - Prob. 64PCh. 22 - Prob. 65PCh. 22 - Prob. 66PCh. 22 - 7 An enzyme has the following pH dependence: At...Ch. 22 - Prob. 68PCh. 22 - Prob. 69PCh. 22 - 0 Nerve gases operate by forming covalent bonds at...Ch. 22 - 1 What would be the appropriate name for an enzyme...Ch. 22 - Prob. 72PCh. 22 - 3 A liver enzyme is made of four subunits: 2A and...Ch. 22 - Prob. 74PCh. 22 - Prob. 75PCh. 22 - Prob. 76PCh. 22 - Prob. 77PCh. 22 - Prob. 78PCh. 22 - Prob. 79PCh. 22 - Prob. 80PCh. 22 - Prob. 81P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Describe the difference between graphs showing temperature versus reaction rate for an enzyme-catalyzed reaction and an uncatalyzed reaction.arrow_forwardThe site on an enzyme molecule that does the catalytic work is called the: a. binding site. b. allosteric site. c. lock. d. active site.arrow_forwardCompare the lock-and-key and induced-fit models for substrate binding to an enzyme.arrow_forward
- List two ways that enzyme catalysis of a reaction is superior to normal conditions.arrow_forward. Describe the lock-and-key model for enzymes. Why are the shapes of the enzyme and its substrate important in this model? What does it mean to say that an enzyme is inhibited by a particular molecule? What happens if this inhibition is irreversible? Can you think of a situation in which it might be advantageous to be able to inhibit an enzyme?arrow_forwardWhen handling or storing solutions of enzymes, the pH is usually kept near 7.0. Explain why.arrow_forward
- Based on the graphical information in Problem 21-41 about enzymes A and B indicate whether the enzyme activity of enzyme B increases or decreases when the following changes in reaction conditions are made. a. pH decreases from 7.6 to 7.2 b. pH increases from 7.2 to 7.4 c. temperature decreases from 37.8C to 37.6C d. temperature increases from 38.2C to 38.4Carrow_forwardExplain how the pasteurization of milk utilizes one of the factors that influence enzyme activity.arrow_forwardThe human body has an average pH of about 7 and a temperature of about 37C. Use graphs to illustrate enzyme activity in the human body as a function of the following: a. Substrate concentration b. Enzyme concentration c. pH include pH optimum value d. Temperature include temperature optimum valuearrow_forward
- How is enzyme specificity explained by the lock-and-key theory?arrow_forwardWhat is at the surface of an active site for an enzyme that binds the substrate to that site?arrow_forward2. Based on their effects on enzyme kinetics, identify whether the type of enzyme inhibition by these drugs involves competitive, uncompetitive or noncompetitive inhibition Tamiflu Relenzaarrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning
Organic And Biological Chemistry
Chemistry
ISBN:9781305081079
Author:STOKER, H. Stephen (howard Stephen)
Publisher:Cengage Learning,
Chemistry for Today: General, Organic, and Bioche...
Chemistry
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Cengage Learning
Introduction to General, Organic and Biochemistry
Chemistry
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Cengage Learning
Introductory Chemistry: An Active Learning Approa...
Chemistry
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
DIGESTER-35 | VITAMINS AND THEIR RELATED COENZYMES| GPAT | NIPER | PHARMACIST| DI; Author: GPAT DISCUSSION CENTER;https://www.youtube.com/watch?v=CGrdNYmho0s;License: Standard YouTube License, CC-BY