Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Chapter 55, Problem 4PL
After an enzyme reaction is completed, the enzyme
a. is still available.
b. was structurally changed.
c. was denatured.
d. is part of the enzyme-substrate complex.
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INSTRUCTIONS
- Answer the following multiple-choice questions and
EXPLAIN in 3-5 sentences why you chose that answer.
Answer properly
-
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.
In 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…
Chapter 55 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 55 - The enzyme amylase accelerate s the reaction of...Ch. 55 - Amylase originates from a. salivary glands and...Ch. 55 - The optimum pH for amylase activity is a. 014 . b....Ch. 55 - After an enzyme reaction is completed, the enzyme...Ch. 55 - As temperatures decrease, enzyme activity a....Ch. 55 - Prob. 6PLCh. 55 - The change of the unique three-dimensional shape...Ch. 55 - Test results:Ch. 55 - Test results:
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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_forwardAn allosteric site is the location on an enzyme’s surface wherea. the substrate binds.b. the signal molecule binds.c. catalysis takes place.d. ATP binds.arrow_forward
- Which of the following describes a reaction that requires substrate 1 to bind the the enzyme, then substrate 2 binds, and then the products are produced? A. No ternary complex B. Ordered ternary complex C. Ping-Pong D. Random ternary complexarrow_forwardcells can regulate different processes in two ways. they can turn on and off the genes that make enzymes, or they can: A. decrease the amount of energy needed to carry out the preferred process B. increase the activation energy of a reaction C. regulate the enzymes that are already made D. increase the amount of energy needed to carry out the preferred processarrow_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_forward
- Which of the following enzyme classes catalyze reactions in which two molecules become covalently linked to each other? A. Kinase B. Hydrolase C. Isomerase D. Ligasearrow_forwardWhat roles do enzymes play in nature? Group of answer choices A.They have a role in metabolic reactions B. They increase rates of reaction but do not shift the equilibrium formed between products and reactants C. They catalyze cellular processes D. All of the abovearrow_forwardThe active site of an enzymea. is identical in structure for all enzymes.b. is the part of the enzyme where its substrate can fit.c. can be used only once.d. is not affected by environmental factors, such as pH and temperature.arrow_forward
- Which of the following best describes the relationship between an enzyme and a substrate a. stable b. causes permanent alteration to the enzyme c. results from non-complimentary bonding d. are complimentaryarrow_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_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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