Anatomy & Physiology
3rd Edition
ISBN: 9781259398629
Author: McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher: Mcgraw Hill Education,
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Textbook Question
Chapter 3, Problem 5DYB
All 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 reactions.
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Which of the following is not true about enzymes?a. They are consumed by the reactions they catalyze.b. They are usually made of amino acids.c. They lower the activation energy of chemical reactions.d. Each one is specific to the particular substrate(s) to which it binds.
Which of the following statement regarding enzymes is false?
a.) they speed up reaction rates
b.) they work within narrow temperature and pH ranges
c.) The active site binds the substarate
d.) They are consumed in the reactions they catalyze
Which of the following is not true about enzymes: a. They increase ΔG of reactions. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.
Chapter 3 Solutions
Anatomy & Physiology
Ch. 3.1 - LEARNING OBJECTIVE
1. Describe the two classes of...Ch. 3.1 - Prob. 1WDLCh. 3.1 - LEARNING OBJECTIVES
2. Describe chemical energy...Ch. 3.1 - Prob. 3LOCh. 3.1 - Muscle contraction is an example of what form of...Ch. 3.1 - Prob. 4LOCh. 3.1 - Prob. 5LOCh. 3.1 - Prob. 3WDLCh. 3.2 - Prob. 6LOCh. 3.2 - Prob. 7LO
Ch. 3.2 - Prob. 4WDLCh. 3.2 - Prob. 8LOCh. 3.2 - Prob. 9LOCh. 3.2 - Prob. 10LOCh. 3.2 - Prob. 11LOCh. 3.2 - Prob. 1WDTCh. 3.2 - For a biochemical reaction that involves simple...Ch. 3.2 - Prob. 6WDLCh. 3.2 - Explain what occurs when the equilibrium is...Ch. 3.2 - Prob. 12LOCh. 3.2 - Prob. 13LOCh. 3.2 - Explain the effect a fever would have on chemical...Ch. 3.2 - Prob. 14LOCh. 3.3 - What is the relationship of enzymes and activation...Ch. 3.3 - Prob. 15LOCh. 3.3 - Prob. 16LOCh. 3.3 - What is the active site of an enzyme and how does...Ch. 3.3 - Prob. 17LOCh. 3.3 - Prob. 18LOCh. 3.3 - What is the mechanism of enzyme action, including...Ch. 3.3 - Prob. 19LOCh. 3.3 - LEARNING OBJECTIVES
20. Describe the naming...Ch. 3.3 - Prob. 2WDTCh. 3.3 - Explain how enzymes are generally named.Ch. 3.3 - Prob. 21LOCh. 3.3 - LEARNING OBJECTIVES
22. Explain the effect of...Ch. 3.3 - Prob. 23LOCh. 3.3 - How do changes in substrate concentration,...Ch. 3.3 - Prob. 24LOCh. 3.3 - How are enzymes regulated through competitive and...Ch. 3.3 - Prob. 25LOCh. 3.3 - LEARNING OBJECTIVES
26. Explain the role of...Ch. 3.3 - LEARNING OBJECTIVES
27. Identify and explain the...Ch. 3.3 - Prob. 15WDLCh. 3.3 - Prob. 16WDLCh. 3.4 - Prob. 28LOCh. 3.4 - LEARNING OBJECTIVES
29. Name the two pathways...Ch. 3.4 - Prob. 30LOCh. 3.4 - Prob. 17WDLCh. 3.4 - Prob. 18WDLCh. 3.4 - Prob. 31LOCh. 3.4 - Prob. 3WDTCh. 3.4 - Prob. 19WDLCh. 3.4 - Prob. 20WDLCh. 3.4 - LEARNING OBJECTIVES
32. Explain the enzymatic...Ch. 3.4 - Prob. 33LOCh. 3.4 - Prob. 21WDLCh. 3.4 - Prob. 34LOCh. 3.4 - Prob. 4WDTCh. 3.4 - Prob. 22WDLCh. 3.4 - Prob. 23WDLCh. 3.4 - Prob. 35LOCh. 3.4 - Prob. 36LOCh. 3.4 - Prob. 24WDLCh. 3.4 - Prob. 25WDLCh. 3.4 - LEARNING OBJECTIVES
37. Calculate the number of...Ch. 3.4 - WHAT DO YOU THINK?
5 Given that energy from each...Ch. 3.4 - Prob. 26WDLCh. 3.4 - LEARNING OBJECTIVES
38. Explain the fate of...Ch. 3.4 - Prob. 39LOCh. 3.4 - Prob. 27WDLCh. 3.4 - Prob. 40LOCh. 3.4 - Prob. 28WDLCh. 3 - Energy in ATP is used to power skeletal muscle...Ch. 3 - Prob. 2DYBCh. 3 - Prob. 3DYBCh. 3 - ATP inhibits phosphofructokinase by binding to an...Ch. 3 - All of the following are accurate about enzymes...Ch. 3 - Prob. 6DYBCh. 3 - Prob. 7DYBCh. 3 - All stages of cellular respiration are decreased...Ch. 3 - Prob. 9DYBCh. 3 - Prob. 10DYBCh. 3 - Prob. 11DYBCh. 3 - Describe the different ways of classifying...Ch. 3 - Prob. 13DYBCh. 3 - Describe the structure and mechanism of enzymes.Ch. 3 - Prob. 15DYBCh. 3 - Prob. 16DYBCh. 3 - In general terms, explain the fate of pyruvate if...Ch. 3 - Describe how oxygen becomes part of water during...Ch. 3 - Identify the source of carbon in carbon dioxide.Ch. 3 - Prob. 20DYBCh. 3 - Prob. 1CALCh. 3 - Prob. 2CALCh. 3 - Another challenge to a patient with impaired...Ch. 3 - Prob. 4CALCh. 3 - Prob. 5CALCh. 3 - Prob. 1CSLCh. 3 - Prob. 2CSLCh. 3 - What occurs to the amount of product formed in a...
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- 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_forwardAn enzyme has the ability to catalyze reactions of several unrelated compounds. The mechanism of how this enzyme operates is best explained by a. the lock-and-key theory b. the induced-fit theory c. the enzyme-substrate complex d. the efficiency of the enzymearrow_forwardWhich of the following statements regarding enzymes is true? A. Enzymes decrease the free energy change of a reaction. B. Enzymes cjange the direction of chemical reaction. C. Enzymes prevent changes in substrate concentrations. D. Enzymes increase the rate of a reaction. E. Enzymes are permanently altered by the reactions they catalyze.arrow_forward
- Which 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_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_forwardWhich of the following is NOT true of enzymes? a) They may interact chemically with their substrates b) They may catalyze a reaction in both forward and reverse directions. c) They may alter Keq for the reaction that they catalyze. d) They may decrease the entropy of their substrates.arrow_forward
- Enzymes work by at least three mechanisms. Which of the following is NOT a mechanism by which enzymes function? A. by putting reactants in close proximity to each other. B. by altering the free energy ( ΔG) of the reaction. C. by orienting the reactants so they are positioned to favour the transition state. D. by altering the immediate environment of the reactants to promote reactant interactions.arrow_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_forwardWhich of the following is TRUE about the enzymatic catalysis of a chemical reaction? A. It increases the energy of the transition state B. It decreases the free energy ∆G so that a reaction can proceed spontaneously C. It decreases the energy of the transition state D. It increases the forward and reverse ratesarrow_forward
- If you wanted to improve the catalytic efficiency of an enzyme, what changes might you make to the enzyme and why? Consider what factors affect catalysis. You can suggest a change in the environment or a change in the protein itself.arrow_forwardWhen an enzymatic reaction is in progress, do you expect to see happen to the amount of substrate? A It will increase as the reaction proceeds. B It will decrease as the reaction proceeds. C The amount will not change as reaction proceeds. D It is not possible to predict what will happen to it as the reaction proceeds.arrow_forwardMolecule A is the substrate for the enzyme shown below. What process is diagrammed in this figure? A) metabolism B) allosteric inhibition C) catalysis D) active site inhibition E) competitive inhibitionarrow_forward
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