6.5: Enzyme Regulation

6.5: Enzyme Regulation

11th Grade - University

6 Qs

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6.5: Enzyme Regulation

6.5: Enzyme Regulation

Assessment

Quiz

Biology

11th Grade - University

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Created by

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

Media Image

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