HUMAN PHYSIOLOGY LAB MANUAL CUSTOM
18th Edition
ISBN: 9781307115215
Author: Fox
Publisher: Mcgraw-Hill/Create
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Textbook Question
Chapter 4, Problem 4RA
In a
a. the product of one enzyme becomes the substrate of the next.
b. the substrate of one enzyme becomes the product of the next.
c. The enzyme in one reaction is converted into the substrate for the next reaction.
d. The enzyme in one reaction is converted into the product for the next reaction.
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Students have asked these similar questions
An 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 enzyme
When an enzyme catalyzes a reaction… A. The pH changes B. Substrate concentration is reduced C. Product concentration is reduced D. Substrate concentration is increased
The concept of “induced fit” refers to the fact that:
a. enzyme specificity is induced by enzyme-substrate binding.
b. enzyme-substrate binding induces an increase in the reaction entropy, thereby catalyzing the reaction.
c. enzyme-substrate binding induces movement along the reaction coordinate to the transition state.
d. substrate binding may induce a conformational change in the enzyme, which then brings catalytic groups into proper orientation.
e. when a substrate binds to an enzyme, the enzyme induces a loss of water (desolvation) from the substrate.
Chapter 4 Solutions
HUMAN PHYSIOLOGY LAB MANUAL CUSTOM
Ch. 4 - Use the lock-and-key model to explain how enzymes...Ch. 4 - Explain how enzymes are named, and the nature of...Ch. 4 - Draw graphs to represent the effects of changes in...Ch. 4 - Prob. 4CPCh. 4 - Prob. 5aCPCh. 4 - Prob. 5bCPCh. 4 - Prob. 5cCPCh. 4 - Prob. 6aCPCh. 4 - Define the terms exergonic reaction and endergonic...Ch. 4 - Prob. 7aCP
Ch. 4 - Prob. 7bCPCh. 4 - Which of these statements about enzymes is...Ch. 4 - Which of these statements about enzyme-catalyzed...Ch. 4 - Which of these statements about lactate...Ch. 4 - In a metabolic pathway, a. the product of one...Ch. 4 - In an inborn error of metabolism,
a. a genetic...Ch. 4 - Which of these represents an endergonic...Ch. 4 - Which of these statements about ATP is true? a....Ch. 4 - When oxygen is combined with 2 hydrogens to make...Ch. 4 - Enzymes increase the rate of chemical reactions...Ch. 4 - According to the law of mass action, which of...Ch. 4 - Explain the relationship between an enzyme's...Ch. 4 - Explain how the rate of enzymatic reactions may be...Ch. 4 - Explain how end-product inhibition represents a...Ch. 4 - Prob. 14RACh. 4 - The coenzymes NAD and FAD can "shuttle" hydrogens...Ch. 4 - Prob. 16RACh. 4 - Why do we need to eat food containing niacin and...Ch. 4 - Metabolic pathways can be likened to intersecting...Ch. 4 - Prob. 19RACh. 4 - Suppose you come across a bottle of enzyme tablets...Ch. 4 - Describe the energy transformations that occur...Ch. 4 - Use the reversible reactions involving the...Ch. 4 - Use the graph here and in figure 4.4 to answer the...Ch. 4 - Use the graph here and in figure 4.4 to answer the...Ch. 4 - Prob. 25RACh. 4 - Prob. 26RACh. 4 - Prob. 27RA
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- INSTRUCTIONS - Answer the following multiple-choice questions and EXPLAIN in 3-5 sentences why you chose that answer. Answer properly -arrow_forwardEnzymes speed up a reaction by: Select one: a. Decreasing the amount of activation energy needed to drive the reaction b. Change the amount of energy of the reactant c. Increasing the amount of activation energy needed to drive the reaction d. Change the amount of energy of the productsarrow_forwardIndicate whether each of the following statements about an enzyme active site is true or false. a. It is the location where substrate molecules are produced. b. It always has a fixed, rigid geometry. c. It always has a geometrical shape exactly complementary to that of substrate. d. It always accomodates several structurally related substrates. e. It is the location where substrate molecules are converted to product molecules. f. It always has a shape that has a degree of flexibility to it. g. it always accomodates only one specific substrate.arrow_forward
- When 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_forwardWhich of the following is a primary function of the active site of an enzyme? a. It binds allosteric regulators of the enzyme. b. It binds noncompetitive inhibitors of the enzyme. c. It catalyzes the reaction associated with the enzyme. d. It is activated by the presence of the end product of the metabolic pathway in which the enzyme is involved. Clear my choice Question 2 Not yet answered Points out of 2.00 Flag question Question text Which of the following statement about the mass spectrometry is true? a. Large amount of protein sample is needed for mass spectrum, and thus it is very expensive. b. It is a powerful method to determine the 3-dimensional structure of proteins. c. It can be sued for protein location in a living cell. d. It can be used to measure the molecular weight of proteins. e. It can be used to determine the stability of a protein structure in solution. Clear my choice…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_forward
- Which ONE of the following would be most effective as a feedback mechanism for anenzymatic reaction? A. Reduced concentration of the product B. A change in pH C. Increased concentration of substrate D. Temporary binding of a non-substrate molecule in the active binding sitearrow_forwardThe transition state means that: a. fewer molecules have the energy required to reach the transition state. b. more product will be formed faster. c. more molecules of the enzyme are needed. d. more molecules of the transition state will form more substrate. e. more molecules have the energy required to reach the product.arrow_forwardWhat is the active site of an enzyme? A. Specific molecule that acts as the reactant in an enzyme-mediated reaction B. An ion or nonprotein organic molecule that associates with an enzyme and is necessary for its function C. The part of an enzyme where substrates bind and a reaction occurs D. A specific ion or molecule that binds to an enzyme to enhance or inhibit its activityarrow_forward
- When an enzymatic reaction is in progress, do you expect to see happen to the amount of product? 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_forwardWhich 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.arrow_forwardEnzymes catalyze a chemical reaction by A. decreasing the amount of ATP required to activate a reaction B. increasing the amount of ATP required to activate a reaction C. slowing down the reaction to obtain more products D. increasing the reaction to obtain more products E. decreasing the amount of ATP required and obtaining more products.arrow_forward
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