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Enzyme Inhibition Types and Effects

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Questions and Answers

What is the result of enzyme inhibition?

An increase in the catalytic activity of an enzyme

An alteration in the optimal pH of an enzyme

A loss of catalytic activity of an enzyme (correct)

A change in the substrate specificity of an enzyme

What can enzyme inhibitors do to the protein structure of an enzyme?

Change the protein structure of an enzyme (correct)

Increase the protein structure of an enzyme

Destroy the protein structure of an enzyme

Maintain the protein structure of an enzyme

What type of enzyme inhibitors are there?

Only competitive inhibitors

Both competitive and noncompetitive inhibitors (correct)

Only noncompetitive inhibitors

Neither competitive nor noncompetitive inhibitors

What can be a characteristic of the effects of some inhibitors?

Sometimes irreversible Signup and view all the answers

What are molecules that prevent enzymes from catalyzing reactions called?

Inhibitors Signup and view all the answers

What is the effect of increasing substrate concentration on an inhibited enzyme?

It reverses the effect of inhibition Signup and view all the answers

What is the term for inhibition that occurs when the inhibitor binds somewhere other than the active site?

Noncompetitive inhibition Signup and view all the answers

How does noncompetitive inhibition affect the enzyme's shape?

It changes the enzyme's shape, decreasing its activity Signup and view all the answers

What happens when an enzyme is inhibited through covalent binding?

The inhibition is irreversible Signup and view all the answers

What is the result of decreasing the concentration of a noncompetitive inhibitor?

The enzyme's activity increases Signup and view all the answers

What is the result of an inhibitor forming a covalent bond with an enzyme?

The inhibition is permanent Signup and view all the answers

What is the key difference between competitive and noncompetitive inhibition?

The location of inhibitor binding Signup and view all the answers

What type of inhibition occurs when an inhibitor binds covalently to an enzyme?

Irreversible inhibition Signup and view all the answers

What is the characteristic of inhibition when an inhibitor covalently binds to an enzyme?

It is irreversible Signup and view all the answers

What happens to the enzyme when an inhibitor forms a covalent bond with it?

The enzyme is permanently inhibited Signup and view all the answers