BIOLOGY: CONCEPTS AND INVESTIGATIONS
4th Edition
ISBN: 9781260536706
Author: Hoefnagels
Publisher: MCG
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Textbook Question
Chapter 4, Problem 4MCQ
How does an enzyme affect the energy of a reaction?
a. The activation energy is lowered.
b. The net energy released is lowered.
c. The energy of the reactants is raised.
d. The energy of the products is raised.
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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 reaction
Name and describe three ways discussed in class that enzymes lower the activation energy of a reaction
A.
B.
C.
a. How does an enzyme speed up the reaction of a substrate?
b. After the products have formed, what happens to the enzyme?
Chapter 4 Solutions
BIOLOGY: CONCEPTS AND INVESTIGATIONS
Ch. 4.1 - What are some examples of the work of a cell?Ch. 4.1 - Prob. 2MCCh. 4.1 - Prob. 3MCCh. 4.1 - Prob. 4MCCh. 4.2 - What is metabolism on a cellular level?Ch. 4.2 - Prob. 2MCCh. 4.2 - Prob. 3MCCh. 4.3 - What are the main parts of an ATP molecule?Ch. 4.3 - Prob. 2MCCh. 4.3 - Describe the relationships among endergonic...
Ch. 4.4 - Prob. 1MCCh. 4.4 - Prob. 2MCCh. 4.4 - Prob. 3MCCh. 4.4 - Prob. 4MCCh. 4.4 - List three conditions that influence enzyme...Ch. 4.5 - What is diffusion?Ch. 4.5 - What types of substances diffuse freely across a...Ch. 4.5 - Prob. 3MCCh. 4.5 - Prob. 4MCCh. 4.5 - Prob. 5MCCh. 4.5 - Prob. 6MCCh. 4.6 - How does a knifefish adjust its electric field?Ch. 4.6 - Prob. 2MCCh. 4 - Prob. 1MCQCh. 4 - Building proteins _____ energy; ATP hydrolysis...Ch. 4 - How does ATP participate in coupled reactions? a....Ch. 4 - How does an enzyme affect the energy of a...Ch. 4 - Imagine that you place a drop of red food coloring...Ch. 4 - Prob. 6MCQCh. 4 - Prob. 7MCQCh. 4 - Some people claim that lifes high degree of...Ch. 4 - List some examples of endergonic and exergonic...Ch. 4 - Why do electron transport chains release energy?Ch. 4 - Provide an example of an appliance that uses...Ch. 4 - Name at least four ways that a cell uses ATP.Ch. 4 - Use what you know about enzymes to propose an...Ch. 4 - Considering that enzymes are essential to all...Ch. 4 - Prob. 8WIOCh. 4 - Prob. 9WIOCh. 4 - Liver cells are packed with glucose. If the...Ch. 4 - List three ways the content in this chapter...Ch. 4 - Prob. 1PITCh. 4 - Prob. 2PITCh. 4 - Prob. 3PIT
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- Explain the effect of an enzyme on the activation energy of a chemical reaction.arrow_forwardHow does an enzyme affect a chemical reaction? Select all that apply. A. Lowers the activation energy B. Decreases the rate of the reaction C. Increases the activation energy D. Increases the rate of the reactionarrow_forwardHow does an enzyme lower the activation energy of a reaction? Draw a graph showing the difference of activation energy of a reaction with and without the help of an enzyme.arrow_forward
- When 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_forwardUse the following illustration of a biochemical reaction to answer the questions below. a. Is this reaction spontaneous? Explain your answer. b. Is ATP required for this reaction to proceed? Explain.arrow_forwardWrite short answer. i. Enzymes accelerate the rate of biochemical reaction. How they do this job?arrow_forward
- Show a graph of the relationship between temperature and reaction rate of enzymesarrow_forwardIn terms of energy, how does an enzyme speed up a biochemical reactionarrow_forwardWhich of these statements about enzymes is true? a,Most proteins are enzymes. b.Most enzymes are proteins. c.Enzymes are changed by the reactions they catalyze. d.The active sites of enzymes have little specificity for substrates.arrow_forward
- Which statement best summarizes the structure of an enzyme before and after it catalyzes a reaction? a.) Its structure is the same. b.) It gains a water molecule in the reaction. c.) It loses a carbon atom in the reaction. d.) It loses a hydrogen atom in the reaction,arrow_forwardEnzymes are catalysts that increase the rate of reactions by pulling two substrates together. lowering the energy of activation. binding to a substrate and releasing protons. binding to a substrate and producing energy.arrow_forwardThe main function of glycogen is? A. To store energy in the form of sugar not currently needed by an animal B. To store energy in the form of sugar not currently needed by an plant C. To get provide structure to cells. D. To help animals grow and maintain new muscle.arrow_forward
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