MCQ
Given below are two statements :

Statement $I$ : Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.

Statement $II$ : When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.

In the light of the above statements, choose the correct answer from the options given below :

  • A
    Statement $I$ is false but Statement $II$ is true.
  • Both Statement $I$ and Statement $II$ are true.
  • C
    Both Statement $I$ and Statement $II$ are false.
  • D
    Statement $I$ is true but Statement $II$ is false.

Answer

Correct option: B.
Both Statement $I$ and Statement $II$ are true.
b
The correct answer is option (2) as low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.

- Competitive inhibitor due to its close structural similarity with the substrate, competes with the substrate for the substrate-binding site of the enzyme.

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