Characteristics of Enzymes

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Questions and Answers

What effect does uncompetitive inhibition have on the velocity (Vmax) and Km value?

  • Vmax is reduced, Km remains unchanged (correct)
  • Both Vmax and Km remain unchanged
  • Vmax remains unchanged, Km is reduced
  • Both Vmax and Km are reduced

What is the primary characteristic of an uncompetitive inhibitor with respect to the free enzyme?

  • Alters the enzyme's structure
  • High affinity for the free enzyme
  • Binds reversibly to the substrate
  • No affinity for the free enzyme (correct)

How does uncompetitive inhibition affect the binding of the inhibitor to the enzyme-substrate complex?

  • Binds to both the free enzyme and the enzyme-substrate complex
  • Binds only to the enzyme-substrate complex (correct)
  • Does not bind to the enzyme-substrate complex
  • Binds only to the free enzyme

Which of the following statements is true about Km in uncompetitive inhibition?

<p>Km remains constant (A)</p> Signup and view all the answers

What happens to the velocity (Vmax) when uncompetitive inhibition occurs?

<p>Vmax decreases (A)</p> Signup and view all the answers

In uncompetitive inhibition, what effect does the inhibitor have on the enzyme's activity?

<p>Reduces the activity (C)</p> Signup and view all the answers

What distinguishes uncompetitive inhibition from other types of enzyme inhibition?

<p>Inhibitor binds only to the enzyme-substrate complex (A)</p> Signup and view all the answers

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