Enzymes Catalysis Strategies Quiz

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What is the distinguishing feature of uncompetitive inhibition?

Inhibitor binds to the active site of enzyme

Adding more substrate relieves inhibition

Inhibitor binds only to enzyme-substrate complex (correct)

Inhibitor is similar in structure to substrate

How does competitive inhibition affect Vmax and KM?

Vmax decreases, KM decreases

Vmax remains the same, KM increases (correct)

Vmax increases, KM remains the same

Vmax decreases, KM remains the same

Which type of irreversible inhibitors involves the formation of a reactive intermediate that covalently modifies the enzyme?

Affinity Labels

Group-Specific Reagents

Transition-state Analogs

Suicide Inhibitors (correct)

What is a key characteristic of transition-state analogs as irreversible inhibitors of enzymes?

They bind tighter to prevent substrate binding Signup and view all the answers

Which type of reversible inhibitor is more specific for an enzyme's active site compared to group-specific reagents?

Affinity Labels Signup and view all the answers

Which strategy involves a molecule other than water playing the role of a proton donor or proton acceptor?

General Acid-Base Catalysis Signup and view all the answers

What type of catalysis involves the active site containing a reactive group that becomes temporarily modified covalently during the catalytic reaction?

Covalent Catalysis Signup and view all the answers

Which strategy involves stabilizing negative charge on a reaction intermediate using a metal ion?

Metal Ion Catalysis Signup and view all the answers

What factor enhances the rate of enzyme-catalyzed reactions by increasing the chances of interactions between enzyme and substrate?

Increased temperature Signup and view all the answers

Which statement is true about enzyme inhibition?

Reversible inhibition involves rapid dissociation of enzyme-inhibitor complex Signup and view all the answers

Enzymes Catalysis Strategies Quiz

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Questions and Answers

What is the distinguishing feature of uncompetitive inhibition?

How does competitive inhibition affect Vmax and KM?

Which type of irreversible inhibitors involves the formation of a reactive intermediate that covalently modifies the enzyme?

What is a key characteristic of transition-state analogs as irreversible inhibitors of enzymes?

Which type of reversible inhibitor is more specific for an enzyme's active site compared to group-specific reagents?

Which strategy involves a molecule other than water playing the role of a proton donor or proton acceptor?

What type of catalysis involves the active site containing a reactive group that becomes temporarily modified covalently during the catalytic reaction?

Which strategy involves stabilizing negative charge on a reaction intermediate using a metal ion?

What factor enhances the rate of enzyme-catalyzed reactions by increasing the chances of interactions between enzyme and substrate?

Which statement is true about enzyme inhibition?

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