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Read the following statements and choose the correct option: 1. When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. 2. Due to its close structural similarity with the substrate, the inhibitor competes with the substrate for the substrate- binding site of the enzyme. 3. Consequently, the substrate cannot bind and a

Options

  1. A1,2,3 are correct
  2. BOnly 4 is correct
  3. Conly 2 and 4 are correct
  4. DOnly 1 and 3 are incorrect

Correct answer

A. 1,2,3 are correct

Step-by-step solution

When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. Due to its close structural similarity with the substrate, the inhibitor competes with the substrate for the substrate-binding site of the enzyme. Consequently, the substrate cannot bind and as a result, the enzyme action declines, e.g., inhibition of succinic dehydrogenase by malonate which closely resembles the substrate succinate in structure. Such competiti

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