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The allosteric inhibitor of an enzyme ___________

  • A.Causes the enzyme to work faster
  • B.Binds to the active site
  • C.Participates in feedback regulation
  • D.Denatures the enzyme

Answer: C

Correct answer: Participates in feedback regulation

An allosteric inhibitor binds at a regulatory site, not the active site, and changes the enzyme’s shape so that catalysis slows. Typically the inhibitor is the end product of the pathway, so that when enough has accumulated the first enzyme is switched off - which is exactly what feedback regulation means. Nothing is denatured, and the effect is reversible.

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