Introduction to General, Organic and Biochemistry
11th Edition
ISBN: 9781285869759
Author: Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher: Cengage Learning
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Chapter 23, Problem 23.85P
Interpretation Introduction
Interpretation:
An explanation corresponding to the given statement that the enzyme catalyzes the forward reaction but not the backward reaction for its substrate-product pair(s) is to be stated.
Concept Introduction:
The biological catalysts which lower the minimum amount of energy required by the reactants to convert into product are known as enzymes. An enzyme does not alter the potential energy of reactant and product.
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Chapter 23 Solutions
Introduction to General, Organic and Biochemistry
Ch. 23 - What is the difference between a catalyst and an...Ch. 23 - What are ribozymes made of?Ch. 23 - Would a lipase hydrolyze two triglycerides, one...Ch. 23 - Compare the activation energy in uncatalyzed...Ch. 23 - Prob. 23.5PCh. 23 - Prob. 23.6PCh. 23 - Prob. 23.7PCh. 23 - Monoamine oxidases are important enzymes in brain...Ch. 23 - Prob. 23.9PCh. 23 - 0 What kind of reaction does each of the following...
Ch. 23 - Prob. 23.11PCh. 23 - Prob. 23.12PCh. 23 - 3 What is the difference between reversible and...Ch. 23 - Prob. 23.14PCh. 23 - 5 At a very low concentration of a certain...Ch. 23 - 6 If we wish to double the rate of an...Ch. 23 - 7 A bacterial enzyme has the following...Ch. 23 - 8 The optimal temperature for the action of...Ch. 23 - 9 The activity of pepsin was measured at various...Ch. 23 - Prob. 23.20PCh. 23 - Prob. 23.21PCh. 23 - Prob. 23.22PCh. 23 - Prob. 23.23PCh. 23 - 4 What kind of chemical reaction occurs most...Ch. 23 - 5 Which of the following is a correct statement...Ch. 23 - Prob. 23.26PCh. 23 - 7 Enzymes are long protein chains, usually...Ch. 23 - Prob. 23.28PCh. 23 - Prob. 23.29PCh. 23 - 0 Can the product of a reaction that is part of a...Ch. 23 - 1 What is the difference between a zymogen and a...Ch. 23 - 2 The enzyme trypsin is synthesized by the body in...Ch. 23 - Prob. 23.33PCh. 23 - Prob. 23.34PCh. 23 - Prob. 23.35PCh. 23 - Prob. 23.36PCh. 23 - Prob. 23.37PCh. 23 - Prob. 23.38PCh. 23 - 9 The enzyme phosphofructokinase (PFK) (Chapter...Ch. 23 - Prob. 23.40PCh. 23 - 1 After a heart attack, the levels of certain...Ch. 23 - Prob. 23.42PCh. 23 - Prob. 23.43PCh. 23 - Prob. 23.44PCh. 23 - 5 Chemists who have been exposed for years to or...Ch. 23 - 6 Which enzyme preparation is given to patients...Ch. 23 - 7 Chymotrypsm is secreted by the pancreas and...Ch. 23 - 8 Explain why transition-state analogs are potent...Ch. 23 - Prob. 23.49PCh. 23 - 0 Explain the relationship between...Ch. 23 - 1 (Chemical Connections 23A) Acetylcholine causes...Ch. 23 - Prob. 23.52PCh. 23 - Prob. 23.53PCh. 23 - Prob. 23.54PCh. 23 - Prob. 23.55PCh. 23 - 6 (Chemical Connections 23C) What role does Mn2+...Ch. 23 - 7 (Chemical Connections 23C) Which amino acids of...Ch. 23 - 8 (Chemical Connections 23D) What is the strategy...Ch. 23 - 9 (Chemical Connections 23D) Why did scientists...Ch. 23 - Prob. 23.60PCh. 23 - Prob. 23.61PCh. 23 - Prob. 23.62PCh. 23 - 3 (Chemical Connections 23E) What is the...Ch. 23 - Prob. 23.64PCh. 23 - Prob. 23.65PCh. 23 - Prob. 23.66PCh. 23 - Prob. 23.67PCh. 23 - Prob. 23.68PCh. 23 - Prob. 23.69PCh. 23 - Prob. 23.70PCh. 23 - 1 Food can be preserved by inactivation of enzymes...Ch. 23 - Prob. 23.72PCh. 23 - 3 Would you expect to find active digestive...Ch. 23 - Prob. 23.74PCh. 23 - Prob. 23.75PCh. 23 - Prob. 23.76PCh. 23 - 7 An enzyme has the following pH dependence: At...Ch. 23 - Prob. 23.78PCh. 23 - Prob. 23.79PCh. 23 - 0 Nerve gases operate by forming covalent bonds at...Ch. 23 - 1 What would be the appropriate name for an enzyme...Ch. 23 - Prob. 23.82PCh. 23 - 3 A liver enzyme is made of four subunits: 2A and...Ch. 23 - Prob. 23.84PCh. 23 - Prob. 23.85PCh. 23 - Prob. 23.86PCh. 23 - Prob. 23.87PCh. 23 - Prob. 23.88PCh. 23 - Prob. 23.89PCh. 23 - Prob. 23.90PCh. 23 - Prob. 23.91P
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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_forwardCompare the lock-and-key and induced-fit models for substrate binding to an enzyme.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_forward
- Why are enzymes that are used for laboratory or clinical work stored in refrigerators?arrow_forward1. An enzyme changes the energy of the reactants of a chemical reaction. True or False 2. An enzyme does not change the energy of the products of a chemical reaction. True or False 3. Does an enzyme change the equilibrium amounts of reactants and products in a biochemical reaction? Justify your answer. 4. How does an enzyme affect the rate of a biochemical reaction?arrow_forwardHeat energy and collision of molecules are sometimes not enough to supply the activation energy needed by a reaction. The chemical reaction never happens. Explain how an enzyme can be used to cause the reaction to begin.arrow_forward
- Enzymes are remarkably efficient catalysts that can increase reaction rates by as many as 20 orders of magnitude.(a) How does an enzyme affect the transition state of a reac-tion, and how does this effect increase the reaction rate?(b) What characteristics of enzymes give them this tremendous effectiveness as catalysts?arrow_forward38- List two factors that can affect the rate of an enzyme-catalyzed reaction. No need for a paragraph, or even two sentences. Just the factors.arrow_forwardWhat should be taken in consideration when designing an enzyme kinetics experiment so that the reaction will not be too slow or too fast? M - amount of substrate B - amount of enzyme |- temperature O - pHarrow_forward
- 21. Michaelis-Menten kinetics is sometimes referred to as “saturation” kinetics. Why? 22. Give the Michaelis-Menten equation and define each term in it. Does this equation apply to all enzymes? If not, to which kind does it not apply? 23. Methanol (wood alcohol) is highly toxic because it is converted to formaldehyde in a reaction catalyzed by the enzyme alcohol dehydrogenase:NAD+ + methanol → NADH + H+ + formaldehydePart of the medical treatment for methanol poisoning is to administer ethanol (ethyl alcohol) in amounts large enough to cause intoxication under normal circumstances. Explain this in terms of what you know about examples of enzymatic reactions.arrow_forwardAn uncatalyzed metabolic reaction has a rate constant of 2.7 x 10-4 M-¹ min-¹ at 310 K. In the presence of the enzyme that catalyzes the reaction the rate constant is 3.4 x 104 M-¹ min-¹ at the same temperature. If the activation energy of the uncatalyzed reaction is 93 kJ/mol, what is the activation energy of the catalyzed reaction? 48 kJ/mol none of the answers are correct 35 kJ/mol 45 kJ/molarrow_forward7TA Which of the following is not true regarding enzymes? * They catalyze only a particular type of reaction They are destroyed after the completion of the reaction they catalyse They remain active even after separation from the source Their activity depends on the pH of the solution Which of these statements about enzyme- catalyzed reactions is true? * The activation energy for the catalyzed O reaction is the same as for the uncatalyzed reaction. The rate of a reaction decreases steadily with time as substrate is depleted. At saturating levels of substrate, the rate of an enzyme-catalyzed reaction is propeEarrow_forward
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