General, Organic, and Biological Chemistry
7th Edition
ISBN: 9781285853918
Author: H. Stephen Stoker
Publisher: Cengage Learning
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Textbook Question
Chapter 21.6, Problem 1QQ
The number of substrate molecules converted to product per minute is a measure of
- a. enzyme activity
- b. enzyme concentration
- c. enzyme specificity
- d. no correct response
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22. According to the lock-and-key theory of enzyme behavior, which of the following can be thought of as the key?
a. enzyme
b. substrate
с. ароenzyme
d. coenzyme
e. no correct response
24. In the following diagram, the rate of an enzyme-catalyzed reaction is graphed on the y (or vertical) axis versus another quantity on the x axis. What quantity is graphed
on the x axis?
a. substrate concentration
Ob. reaction pH
Oc. reaction temperature
Od. more than one response is correct
e. no correct response
A non-reactive substrate analogue has been found to inhibit a
target enzyme. Modifying the inhibitor to make it more like TS
(‡) will? (Select All that Apply)
a. Make it a better inhibitor
b. Make it a worse inhibitor
c. Make it bind tighter
d. Make it bind weaker
e. Increase the KD
f. Decrease the KD
Chapter 21 Solutions
General, Organic, and Biological Chemistry
Ch. 21.1 - Which of the following statements concerning the...Ch. 21.1 - Prob. 2QQCh. 21.2 - Which of the following statements about a...Ch. 21.2 - Which of the following statements about cofactors...Ch. 21.2 - Prob. 3QQCh. 21.3 - Which of the following statements concerning an...Ch. 21.3 - Prob. 2QQCh. 21.3 - Which of the following pairings of enzyme type and...Ch. 21.3 - Which of the following pairings of enzyme type and...Ch. 21.4 - Prob. 1QQ
Ch. 21.4 - Which of the following statements concerning the...Ch. 21.4 - Prob. 3QQCh. 21.5 - The specificity of an enzyme that catalyzes the...Ch. 21.5 - Prob. 2QQCh. 21.6 - The number of substrate molecules converted to...Ch. 21.6 - Prob. 2QQCh. 21.6 - Prob. 3QQCh. 21.7 - Extremozyme presence is not possible in which of...Ch. 21.7 - Prob. 2QQCh. 21.8 - Prob. 1QQCh. 21.8 - Prob. 2QQCh. 21.8 - Prob. 3QQCh. 21.9 - Prob. 1QQCh. 21.9 - Prob. 2QQCh. 21.9 - Prob. 3QQCh. 21.10 - Prob. 1QQCh. 21.10 - Prob. 2QQCh. 21.11 - Prob. 1QQCh. 21.11 - Prob. 2QQCh. 21.12 - Prob. 1QQCh. 21.12 - Prob. 2QQCh. 21.12 - Prob. 3QQCh. 21.13 - Prob. 1QQCh. 21.13 - Prob. 2QQCh. 21.13 - In the recharging of a metal-containing enzyme by...Ch. 21.14 - Prob. 1QQCh. 21.14 - Prob. 2QQCh. 21.14 - Prob. 3QQCh. 21.14 - Which of the B vitamins has a name that draws...Ch. 21.14 - Prob. 5QQCh. 21.14 - Prob. 6QQCh. 21.15 - Prob. 1QQCh. 21.15 - Prob. 2QQCh. 21.15 - Prob. 3QQCh. 21.15 - For which of the following vitamins is blood...Ch. 21.15 - Prob. 5QQCh. 21 - What is the general role of enzymes in the human...Ch. 21 - Why does the body need so many different enzymes?Ch. 21 - Prob. 21.3EPCh. 21 - Prob. 21.4EPCh. 21 - Indicate whether each of the following phrases...Ch. 21 - Indicate whether each of the following phrases...Ch. 21 - Explain why a metal ion can function as a cofactor...Ch. 21 - Prob. 21.8EPCh. 21 - Prob. 21.9EPCh. 21 - Indicate whether each of the following statements...Ch. 21 - Prob. 21.11EPCh. 21 - Based on its name, indicate whether each of the...Ch. 21 - Predict the function of each of the following...Ch. 21 - Predict the function of each of the following...Ch. 21 - Prob. 21.15EPCh. 21 - Prob. 21.16EPCh. 21 - Prob. 21.17EPCh. 21 - Suggest a name for an enzyme that catalyzes each...Ch. 21 - Prob. 21.19EPCh. 21 - Prob. 21.20EPCh. 21 - To which of the six major classes of enzymes does...Ch. 21 - To which of the six major classes of enzymes does...Ch. 21 - Identify the enzyme needed in each of the...Ch. 21 - Identify the enzyme needed in each of the...Ch. 21 - Prob. 21.25EPCh. 21 - Indicate whether each of the following statements...Ch. 21 - Indicate whether each of the statements in Problem...Ch. 21 - Indicate whether each of the statements in Problem...Ch. 21 - Prob. 21.29EPCh. 21 - Prob. 21.30EPCh. 21 - Prob. 21.31EPCh. 21 - Prob. 21.32EPCh. 21 - Indicate whether each of the following statements...Ch. 21 - Indicate whether each of the following statements...Ch. 21 - Prob. 21.35EPCh. 21 - Prob. 21.36EPCh. 21 - Prob. 21.37EPCh. 21 - Prob. 21.38EPCh. 21 - What type of specificity (absolute, group,...Ch. 21 - What type of specificity (absolute, group,...Ch. 21 - The following graph shows the relationship between...Ch. 21 - Based on the graphical information in Problem...Ch. 21 - Prob. 21.43EPCh. 21 - Based on the graphical information in Problem...Ch. 21 - Prob. 21.45EPCh. 21 - Prob. 21.46EPCh. 21 - Draw a graph that shows the effect of increasing...Ch. 21 - Prob. 21.48EPCh. 21 - Prob. 21.49EPCh. 21 - What is an enzyme turnover number?Ch. 21 - Describe the effect that each of the following...Ch. 21 - Describe the effect that each of the following...Ch. 21 - What is an extremophile?Ch. 21 - What are two common environmental settings where...Ch. 21 - Indicate whether each of the following pairings of...Ch. 21 - Indicate whether each of the following pairings of...Ch. 21 - Prob. 21.57EPCh. 21 - What type(s) of extremophiles are used in oil well...Ch. 21 - Prob. 21.59EPCh. 21 - Prob. 21.60EPCh. 21 - Prob. 21.61EPCh. 21 - Indicate whether each of the following statements...Ch. 21 - Prob. 21.63EPCh. 21 - Indicate whether each of the following statements...Ch. 21 - Prob. 21.65EPCh. 21 - Indicate whether each of the following statements...Ch. 21 - Prob. 21.67EPCh. 21 - Prob. 21.68EPCh. 21 - Prob. 21.69EPCh. 21 - Prob. 21.70EPCh. 21 - Prob. 21.71EPCh. 21 - Prob. 21.72EPCh. 21 - Prob. 21.73EPCh. 21 - Prob. 21.74EPCh. 21 - Prob. 21.75EPCh. 21 - Prob. 21.76EPCh. 21 - Prob. 21.77EPCh. 21 - Prob. 21.78EPCh. 21 - Prob. 21.79EPCh. 21 - Prob. 21.80EPCh. 21 - Prob. 21.81EPCh. 21 - Prob. 21.82EPCh. 21 - What is the medical diagnostic value associated...Ch. 21 - Prob. 21.84EPCh. 21 - Indicate whether each of the following is a...Ch. 21 - Indicate whether each of the following is a...Ch. 21 - Prob. 21.87EPCh. 21 - Prob. 21.88EPCh. 21 - Prob. 21.89EPCh. 21 - Prob. 21.90EPCh. 21 - Prob. 21.91EPCh. 21 - What are the structural differences between the...Ch. 21 - Prob. 21.93EPCh. 21 - Prob. 21.94EPCh. 21 - Vitamin C is biosynthesized in a two-step process....Ch. 21 - Prob. 21.96EPCh. 21 - Prob. 21.97EPCh. 21 - Prob. 21.98EPCh. 21 - Prob. 21.99EPCh. 21 - Prob. 21.100EPCh. 21 - Which of the B vitamins has a structure that fits...Ch. 21 - Which of the B vitamins has a structure that fits...Ch. 21 - Prob. 21.103EPCh. 21 - Prob. 21.104EPCh. 21 - Prob. 21.105EPCh. 21 - Prob. 21.106EPCh. 21 - The coenzyme forms of B vitamins are involved in...Ch. 21 - The coenzyme form of B vitamins are involved in...Ch. 21 - Prob. 21.109EPCh. 21 - What is the relationship between the plant pigment...Ch. 21 - Prob. 21.111EPCh. 21 - List four major functions of vitamin A in the...Ch. 21 - Prob. 21.113EPCh. 21 - Prob. 21.114EPCh. 21 - Prob. 21.115EPCh. 21 - Prob. 21.116EPCh. 21 - Prob. 21.117EPCh. 21 - Prob. 21.118EPCh. 21 - Prob. 21.119EPCh. 21 - Prob. 21.120EPCh. 21 - Which structural form of vitamin E exhibits the...Ch. 21 - Prob. 21.122EPCh. 21 - Prob. 21.123EPCh. 21 - Prob. 21.124EPCh. 21 - Prob. 21.125EPCh. 21 - Prob. 21.126EPCh. 21 - Prob. 21.127EPCh. 21 - Prob. 21.128EPCh. 21 - Prob. 21.129EPCh. 21 - Prob. 21.130EPCh. 21 - Prob. 21.131EPCh. 21 - Which vitamin or vitamins has (have) each of the...Ch. 21 - Which of the 13 vitamins has a structure that fits...Ch. 21 - Prob. 21.134EP
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- 6. An enzyme without its cofactor is inactive. Another name for an inactive enzyme of this type is a. isoenzyme b. allosteric enzyme с. ароenzyme d. more than one response is correct e. no correct responsearrow_forwardProblem 4 The hydrolysis of a substrate, S, by an enzyme has been studied in the lab. The following initial rates, vo, were recorded at different concentrations. [S] (M) Vo (M/min) 2.10-104 1.20- 106 4.20- 104 3.10- 106 6.30 - 105 9.10 - 106 9.30- 104 1.42-103 B. What is the rate of reaction at [S] = 1.1-104 M? 'arrow_forwardProblem 4 The hydrolysis of a substrate, S, by an enzyme has been studied in the lab. The following initial rates, vo, were recorded at different concentrations. [S] (M) 2.10- 104 Vo (M/min) 1.20 - 106 4.20. 104 3.10- 106 9.30- 104 6.30 - 106 1.42. 103 9.10- 106 C. Explain, why encyıies can make reactions go laster? Does enzymes also catalyse the reverse reaction from product to substrate?arrow_forward
- (b) Determine how the reaction rate varies with substrate concentration. Rate increases substrate is added when enzyme is saturated with substrate Incorrect Rate decreases additional substrate is added when substrate concentration is low Answer Bank Rate is unchanged additional substrate is added when substrate concentration is very higharrow_forwardProblem 1. At the given temperature, experimental data for enzyme-catalyzed reaction rates were obtained as follows. Answer the following questions. The initially added enzyme concentration, [E.], was 2 mol/L. The reaction rates in the absence and the presence of an inhibitor were measured. The concentration of the inhibitor was 0.5 mol/L. [S] (mol/L) v (no inhibitor) (mol/L-min) v (inhibitor presence) (mol/L.min) 0.1 3.7 0.05 3.0 0.03 2.5 0.015 1.8 0.005 0.7 1.3 1.2 1.1 0.9 0.5 a. Calculate the values of Km and Vm in the absence of the inhibitor. b. Calculate the value of K₁ in the presence of the inhibitor. c. Draw the catalytic mechanism of the reaction in the presence of the inhibitor. d. Identify the type of inhibitor.arrow_forwardProblem 4 The hydrolysis of a substrate, S, by an enzyme has been studied in the lab. The following initial rates, vo, were recorded at different concentrations. [S] (M) Vo (M/min) 2.10- 104 1.20- 106 4.20. 104 3.10. 106 9.30- 104 6.30 - 106 1.42- 103 9.10- 106 A. Determine the rate constants for degradation of the substrate.arrow_forward
- An enzyme has no activity at an extremely low pH. What could be an explanation for this observation? a. enzyme inhibition b. protein denaturation c. lack of cofactors d. substrate deactivation e. no correct response givenarrow_forwardProblem 4 The hydrolysis of a substrate, S, by an enzyme has been studied in the lab. The following initial rates, vo, were recorded at different concentrations. [S] (M) Vo (M/min) 2.10. 104 1.20- 106 4.20- 104 3.10- 106 9.30. 104 6.30 - 105 1.42- 103 9.10- 106 A. Determine the rate constants for degradation of the substrate. B. What is the rate of reaction at [S] = 1.1-10“ M? C. Explain, why enzymes can make reactions go faster? Does enzymes also catalyse the reverse reaction from product to substrate?arrow_forwardThe complete hydrolysis of a protein yields what as products? a. amino acids b. dipeptides c. monosaccharides d. glucose molecules e. no correct response givenarrow_forward
- An experiment was performed to determine the effects of an inhibitor on the breakdown of glycogen by an enzyme. In an accompanying experiment, the inhibitor was added to the glycogen-enzyme suspension and reacted using the same experimental conditions. The data obtained from these experiments is tabulated below. Glycogen (mM) Product Formed Glycogen only (mM/min) Product Formed Glycogen and Inhibitor (mM/min) 0.5 22.6 15.9 1.0 32.1 24.9 1.5 38.1 28.2 2.0 41.2 35.1 2.5 44.7 40.0 3.0 48.5 43.3 Draw the Michaelis-Menten and Lineweaver-Burke plots of these dat In the attachment. Determine the form of inhibition observed from these results, and explain your rationale for this form. Determine the values for Km and Vmax from these results.arrow_forwardQuestion 17 You analyze the enzyme A's reaction. When vo is 9.6uM s1, Vmax is 480UM s and [S] is 40uM, what is the Km of this enzyme A? You do need to show the calculation. Edit View Insert Format Tools Tablearrow_forwardConsider the same enzyme catalyzed reaction with KM 25 mM, Vm 100 mM/s, and [S] =20 mM. A Noncompetitive inhibitor to this reaction has an inhibitor constant, K₁- 10 mM. What is the percent inhibition (%i) when the inhibitor concentration is [1]-5 mM? 50 33 67 25 Questionarrow_forward
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