Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 8, Problem 20TYK
Summary Introduction
Introduction: Enzyme is defined as a biological catalyst that speeds up
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Students have asked these similar questions
What is it called when the final product of an enzymatic pathway acts as a modulator for the first enzyme in the pathway?
a. isoenzyme activation
b. relative specificity
c. feed back inhibition
d. competitive inhibition
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.
What is the reason why the transition state of a catalyzed reaction is lower has lower energy compared to an uncatalyzed reaction?
A. because enzymes only work at low temperatures
B. because of favorable interactions with the substrate
C. because of enthalpic interactions between the enzyme and the transition state
D. A and B
Chapter 8 Solutions
Biology - Study Guide
Ch. 8 - Complete the following concept map that summarizes...Ch. 8 - Complete the following table to indicate how the...Ch. 8 - Develop a concept map on free energy and G. The...Ch. 8 - Prob. 4IQCh. 8 - Prob. 5IQCh. 8 - In the following graph of an exergonic reaction...Ch. 8 - In the following diagram of a catalytic cycle,...Ch. 8 - Return to the diagram in Interactive Question 3.7,...Ch. 8 - Both ATP and ADP serve as regulators of enzyme...Ch. 8 - What is the relationship between the concept of...
Ch. 8 - What role do enzymes play in metabolism?Ch. 8 - ________ the totality of an organisms chemical...Ch. 8 - _______ pathways that use energy to synthesize...Ch. 8 - Prob. 3TYKFCh. 8 - _______ the most random form of energyCh. 8 - _______ term for the measure of disorder or...Ch. 8 - Prob. 6TYKFCh. 8 - _______ inhibitors that decrease an enzymes...Ch. 8 - Prob. 8TYKFCh. 8 - Prob. 9TYKFCh. 8 - Prob. 10TYKFCh. 8 - Catabolic and anabolic pathways are often coupled...Ch. 8 - Which statement most closely reflects the first...Ch. 8 - When a cell breaks down glucose, only about 34% of...Ch. 8 - Prob. 4TYKCh. 8 - Prob. 5TYKCh. 8 - Prob. 6TYKCh. 8 - One way in which a cell maintains metabolic...Ch. 8 - Prob. 8TYKCh. 8 - Prob. 9TYKCh. 8 - What is meant by an induced fit? a. The binding of...Ch. 8 - In an experiment, changing the pH from 7 to 6...Ch. 8 - Prob. 12TYKCh. 8 - Penicillin binds to the active site of an enzyme...Ch. 8 - Prob. 14TYKCh. 8 - Prob. 15TYKCh. 8 - Which line in the diagram indicates the G of the...Ch. 8 - Prob. 17TYKCh. 8 - Prob. 18TYKCh. 8 - Prob. 19TYKCh. 8 - Prob. 20TYK
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- What is the function of the active site of an enzyme? a. Involved in the catalytic reaction of the enzyme b. Inhibit the enzymatic activity c. Binding of regulators d. Binding of products after the reactionarrow_forwardSubstance A is converted to substance B in a metabolic reaction. Which statement best describes the role of enzyme during this reaction? A. It dissolves substance A in the reaction medium. B. It speeds up the reaction without it being consumed in the process. C. It provides energy to the reaction system D. It adjusts the pH of the reaction medium.arrow_forwardWhat distinguishes a linear metabolic pathway from a cyclic metabolic pathway? A. The last step of the pathway regenerates a reactant for the first step. B. The product inhibits an enzyme in the pathway, slowing or stopping the metabolic pathway. C. A linear pathway runs straight in one direction from reactant to product. D. Enzymes convert reactants into intermediates before separate enzymes convert intermediates into products.arrow_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_forwardHow could you use the diversity of metabolic pathways that produce the same or similar products to critique this argument? Rank the steps from first to last. a. New enzymes cause modification of the pathway in an advantageous way. b. The biochemical pathway is gradually modified. c. A pathway exists and accomplishes some functions. d. An organism with cellular enzymes has mutations that allow new enzymes to arise.arrow_forwardWhen you heat a solution past the optimum for an enzyme? A. the active site permanently binds substrate via covalent bonding B. the enzyme stiffens and slows down C. the enzyme starts to denaturearrow_forward
- The lock-and-key theory described the action of ______. Select one: a. enzymes as locks that fit other enzymes b. substrates as locks that fit different enzymes c. enzymes as keys that fit different chemicals d. substrates as keys that fit different enzymesarrow_forwardWhich 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_forwardWhat is the definition of a catabolic metabolic pathway? A. A pathway that releases energy and releases matter B. A pathway that stores energy and releases matter C. A pathway that releases energy and stores matter D. A pathway that stores energy and stores matterarrow_forward
- All of the following increase enzymatic activity except a. an increase in temperature. b. an increase in pH. c. an increase in concentration of the substrate. d. an increase in concentration of the enzyme that catalyzes the reaction.arrow_forwardWhat does an enzyme change relative to an uncatalyzed reaction? a) The rate of the reaction. b) The free energy change of the reaction. c) The size of the active site. d) The pH. e) The equilibrium constant.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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