NEET Biology NEET PYQ-Enzyme

  • question_answer
    Which of the following statements regarding enzyme inhibition is correct? [AIPMT (S) 2005]

    A) Non-competitive inhibition of an enzyme can he overcome by adding large amount of substrate

    B) Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein

    C) Competitive inhibition is seen when the substrate and the inhibitor compete

    D)  Non-competitive inhibitors often bind to the enzyme irreversibly

    Correct Answer: B

    Solution :

    [B] A competitive inhibitor competes with substrate molecule for occupying the active site of an enzyme. These inhibitors have structural resemblance with substrate molecules due to which they easily get active site of an enzyme and form an enzyme-inhibitor complex. \[\underset{(enzyme)}{\mathop{E}}\,+\underset{(inhibitor)}{\mathop{I}}\,\to \,\,EI\,complex\]


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