Which of the following statement is incorrect:
Correct answer: C. Enzymes work best in low pH
- A. Competitive inhibitor binds to active site
- B. The substrate binds to active site
- C. Enzymes work best in low pH
- D. Both competitive inhibitor binding to alternative site & substrate binding to active site
Explanation
Option C is the incorrect one as enzymes work at optimum pH rather than low pH. While the active site or alternative site is the region where the substrate gets bind. If an inhibitor binds this way it is called a competitive inhibitor. *Answer marked is wrong on the website*
This question appeared on the HEC Phase I 2017 paper, which you can sit online with every answer explained.
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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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