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NTA Abhyas NEET2020ChemistryBiomoleculesPractice

Among the statements given below, which statement/s is/are correct regarding the relationship between enzyme and substrate? I. Above a certain concentration of substrate, an enzyme reaches its maximum rate of reaction II. Increasing the substrate concentration to a higher level doesn't reverse the effects of a competitive inhibitor. III. At high substrate concentration, a non-competitive inhibitor no longer affects t

Options

  1. AI and II only
  2. BI, II and IV
  3. CI only
  4. DIII and IV only

Correct answer

C. I only

Step-by-step solution

Substrate concentration is a factor that plays a role in enzyme activity. More the substrate concentration, more is the enzyme activity till it reaches saturation where even on increasing substrate will not increase the activity. Statement I agrees to it but statement IV is incomplete. Statement III is stating the presence of non-competitive inhibitor, which binds to a separate site on enzyme than the substrate and alters the active site of enzyme thus even if substrate concentration is increased it will not lead t

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