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
- AI and II only
- BI, II and IV
- CI only
- 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