A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called__________?
Correct answer: C. Inhibitor
- A. Substrate
- B. Co-factor
- C. Inhibitor
- D. Promotor
Explanation
An inhibitor binds to an enzyme without being converted into the normal product and can block the active site, preventing substrate binding. A substrate is normally transformed by the enzyme, so students may choose substrate if they overlook the phrase “not transformed into product.”
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About Enzyme Inhibitors
Enzyme inhibitors reduce reaction rate by interfering with enzyme-substrate interaction or catalytic activity. Coverage includes reversible competitive, non-competitive and uncompetitive inhibition, the effects of inhibitor concentration on reaction rate, and why competitive inhibition can be reduced by increasing substrate concentration.
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