EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
7th Edition
ISBN: 9780100853188
Author: STOKER
Publisher: YUZU
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Question
Chapter 21.1, Problem 2QQ
Interpretation Introduction
Interpretation: The correct comparison involving enzymes and laboratory (nonbiochemical) catalysts has to be stated.
Concept introduction: The compound that acts as a catalyst for a biochemical reaction is called enzyme. The nonbiochemical catalysts are called laboratory catalysts.
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Which of the following statements about enzymes or their function is true?
Select one:
a. Enzymes are permanently modified during a biochemical reaction.
O b. Enzymes act as catalysts.
c. Enzymes modify reactions thermodynamic equilibrium.
O d. Enzymes increase the activation energy required for a biochemical reaction to occur.
Which of these statements concerning
enzymes is correct?
a. Enzymes increase the rate of reactions
but are permanently
changed as a result.
b. Enzymes are proteins that function as
catalysts.
c. Enzymes increase the activation energy
requirement for a reaction
to occur.
d. Enzymes usually can only double the
rate of a chemical
reaction.
e. Enzymes increase the kinetic energy of
the reactants.
Which of the following statements concerning enzymes is TRUE?
a.
Enzymes can increase the equilibrium constant of a reaction by 1000-fold.
b.
The activity of many enzymes can be regulated.
c.
Many enzymes are consumed in the reactions they catalyze.
d.
The rate of enzymatic catalysis is independent of pH.
Chapter 21 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
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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- Which of the following statements is false? a. A reaction may not occur at a detectable rate even though it has a favorable equilibrium. b. After a reaction, the enzyme involved becomes available to catalyze the reaction again. c. For S → P, a catalyst shifts the reaction equilibrium to the right. d. Lowering the temperature of a reaction will lower the reaction rate. e. Substrate binds to an enzyme's active site.arrow_forwardAll of the following are accurate about enzymes except: A. Enzymes are typically globular proteins with an active site B. Enzymes decrease activation energy C. Enzymes can be used over and over to catalyze a substrate to a product D. Enzymes are versatile and can catalyze different types of chemical reactionsarrow_forwardWhen an enzyme catalyzes a reaction… A. The pH changes B. Substrate concentration is reduced C. Product concentration is reduced D. Substrate concentration is increasedarrow_forward
- Which of the following accurately describes how an enzyme functions? a. reduces the energy content of the products b. allows for the exothermic reaction of materials that are usually endothermic c. changes the reaction mechanism effectively reducing the activation energy d. shifts the equilibrium for the reactionarrow_forwardWhich of the following statements is not true about enzymes?* A. Enzymes are biological catalysts B. Enzymes as catalysts lowers the activation energy thus, speeds up the rate of reaction C. Enzymes are proteins D. Enzymes are highly specific E. None of the given optionsarrow_forwardIn a highly high-temperature environment, you placed an enzyme and some substrates. You've seen that there hasn't been any reaction. Applying what you have learned on enzyme activity, how would you explain what occurred? A. The enzyme was not placed at a pH level that would allow it to react at its maximum rate. B. There are not enough enzymes for the reaction to occur. C. The enzyme may have denatured or broken down due to the high temperature of the environment, resulting in no reaction. D. There are not enough substrates for reaction to occur. Substrate concentration affects enzyme activity. Determine what would occur when there are too many substrates and fewer enzymes? A. No enzyme activity would occur. B. The reaction rate would continuously increase. C. The reaction would speed up tremendously. D. Maximal rate of reaction would occur. Enzyme activity mainly involves the active site and the substrate. How would you compare the active site from the substrate? A. The substrate…arrow_forward
- INSTRUCTIONS - Answer the following multiple-choice questions and EXPLAIN in 3-5 sentences why you chose that answer. Answer properly -arrow_forwardWhich of the following is true about allosteric enzymes? A. Allosteric enzymes are always multimeric. B. Regulatory sites (allosteric sites) on an allosteric enzyme are always different from the catalytic site. C. Allosteric enzymes always change the conformation of the active site in response to binding of an allosteric modulator. D. Suicide inactivators are examples of allosteric modulators.arrow_forwardWhich of these statements concerning enzymes is correct?a. Enzymes increase the rate of reactions but are permanentlychanged as a result.b. Enzymes are proteins that function as catalysts.c. Enzymes increase the activation energy requirement for a reactionto occur.d. Enzymes usually can only double the rate of a chemicalreaction.e. Enzymes increase the kinetic energy of the reactants.arrow_forward
- Which of the following statements is FALSE? Select one: a. Enzymes lower the amount of energy needed for a reaction. b. Enzymes are chemically unchanged during the actual catalytic process. c. Enzymes speed up the attainment of a reaction equilibrium. d. Enzymes make reactions 103 to 1020 times faster.arrow_forwardWhat are enzymes? A. Enzymes are biological catalysts made up of amino acids B. Enzymes are biological catalysts that create an environment to lower the energy expenditure to break "old" bonds. C. Enzymes are biological catalysts that provide a mechanism to make unfavorable reactions proceed. D. Enzymes are biological catalysts that require cofactors to effect catalysis E. Enzymes are biological catalysts that provide the means to channel chemical energy to allow biological transformations to occurarrow_forwardWhich of the following choices BEST describes metabolism? a. breakdown of biomolecules b. controlled by enzymes and involved ATP c. all of the choices are correct d. synthesis of biomoleculesarrow_forward
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