NTA Abhyas NEET2020ChemistryBiomoleculesPractice
The given figure shows three velocity-substrate concentration curves for an enzyme reaction. What do the curves x, y, and z depict respectively ?
Options
- Ax-Normal enzyme reaction, y-Competitive inhibition, z-Non-competitive inhibition
- Bx-Enzyme with an allosteric modulator added, y-Normal enzyme activity, z-Competitive nhibition
- Cx-Enzyme with an allosteric stimulator, y-Competitive inhibition added, z-Normal enzyme reaction
- Dx-Normal enzyme reaction, y-Non-competitive inhibitor added, z-Allosteric inhibitor added
Correct answer
A. x-Normal enzyme reaction, y-Competitive inhibition, z-Non-competitive inhibition
Step-by-step solution
Enzymes or biocatalysts are proteinaceous substance that are capable of catalysing chemical reactions of biological systems without themselves undergoing any change. The graph x shows normal enzyme reaction, graph y shows competitve inhibition and graph z shows non competitive inhibition. In competitive inhibition the inhibitor, which is a substrate analogue, combines reversibly to the free enzyme at the active site. In non competitive inhibition, the inhibitor binds to enzyme at a place other than substrate bindin