A non-competitive inhibitor

  1. reduces Vmax and is not overcome by more substrate
  2. increases Km only
  3. binds to the active site
  4. has no effect at high substrate concentrations
Answer

A) reduces Vmax and is not overcome by more substrate

It changes the shape of the active site. AS & A Level Biology · Topic 3 Enzymes · 3.2 Factors that affect enzyme action

Biology MCQ · More A Level Biology: Enzymes MCQs · Practise