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Question
Which of the following statements is not true about enzyme inhibitors?
Options
Inhibit the catalytic activity of the enzyme.
Prevent the binding of substrate.
Generally a strong covalent bond is formed between an inhibitor and an enzyme.
Inhibitors can be competitive or non-competitive.
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Solution
Generally a strong covalent bond is formed between an inhibitor and an enzyme.
Explanation:
Inhibitors are chemical substances that tend to reduce the activity of a particular enzyme. Generally, a weak bond such as H-bonding, van der Waals interaction, etc. is formed between the enzyme and the inhibitor.
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Assertion: Enzymes have active sites that hold substrate molecule for a chemical reaction.
Reason: Drugs compete with natural substrate by attaching covalently to the active site of enzyme.
Assertion: Competitive inhibitors compete with natural substrate for their attachment on the active sites of enzymes.
Reason: In competitive inhibition, inhibitor binds to the allosteric site of the enzyme.
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