NEETBotanyBiomolecules (B)
Read the following statements regarding enzyme inhibition: A. The inhibition of succinic dehydrogenase by malonate is a classic example of competitive inhibition. B. Malonate inhibits the enzyme by binding to an allosteric site, thereby altering the shape of the active site. C. The inhibitor malonate closely resembles the substrate succinate in its molecular structure. D. Competitive inhibitors are often used in the
Options
- AOne
- BFour
- CTwo
- DThree
Correct answer
D. Three
Step-by-step solution
Statement A is correct. The inhibition of succinic dehydrogenase by malonate is a classic example of competitive inhibition. Statement B is incorrect. In competitive inhibition, the inhibitor competes with the substrate for the substrate-binding site (active site) of the enzyme, not an allosteric site. Statement C is correct. Malonate acts as a competitive inhibitor because its molecular structure closely resembles that of the substrate, succinate. Statement D is correct. As stated in NCERT, such competitive inhibi