
6.5: Enzyme Regulation
Quiz
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Biology
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11th Grade - University
•
Medium
Austin Blackford
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The allosteric inhibitor of an enzyme
Causes the enzyme to work faster
Binds to the active site
Participates in feedback regulation
Denatures the enzyme
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A receptor site that a molecule can bind to that changes the shape of the active site is called a(n):
Allosteric Site
Active Site
Activation site
Reactant site
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
How does a noncompetitive inhibitor decrease reaction rates?
Binds to the active site
Binds to the allosteric site
Increases the free energy
Increases the substrate concentration
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Describes the process by which an enzyme's function at the active site may be either activated or inhibited by the binding of a regulatory molecule at a separate site.
Allosteric Interactions
Feedback Inhibition
Competitive Inhibition
Noncompetitive Inhibition
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Key metabolic enzymes are often inhibited by the end product of the pathway they control.
Competitive inhibition
Non-competitive inhibition
Feedback inhibition
Cofactors
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This best describes positive cooperativity of hemoglobin
As 1 O2 binds to a heme group, it causes a sudden shift of polarity, attracting more O2
As 1 O2 binds to a heme group, a conformational change occurs, making it more likely for additional O2 to bind
As 1 O2 binds to a heme group, hemoglobin becomes slightly less hydrophilic
As 1 O2 binds to a globin group, the binding site of O2 within the molecule becomes more exposed
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