Exams › JEE Advanced › Chemistry

Consider two statements about drug-enzyme interactions. Statement I: An enzyme's action can be blocked only if an inhibitor binds at the active site of the enzyme. Statement II: An inhibitor may form a strong covalent bond with the enzyme. Which option is correct?

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

Correct answer: Statement I is false but Statement II is true

Solution

Statement I is false because inhibitors can also bind at allosteric sites (not only the active site). Statement II is true since some inhibitors bind covalently and irreversibly.

Related JEE Advanced Chemistry questions

• Which of the following substances is classified as an antipyretic drug (a fever-reducing agent)?
• Match the following drugs with their correct classification: Paracetamol --- Antipyretic Seldane (terfenadine) --- Antihistamine Aspartame --- Artificial sweetening agent Which of the following statements about the above matching is true?
• Which of the following correctly describes the key structural feature of penicillin that is responsible for its antibiotic activity?
• Which of the following ions, when dissolved in water, reduces the lathering ability of soap?
• Which among the following is classified as an antibiotic?
• A patient is suffering from a deficiency of noradrenaline (norepinephrine). Which class of drug should be prescribed?

⚔️ Practice JEE Advanced Chemistry free + battle 1v1 →