Multiple choice

Malonic acid affects succinic dehydrogenase for oxidising succinic acid. Malonic acid is a

  1. non-competitive inhibitor

  2. feedback inhibitor

  3. suicide inhibitor

  4. competitive inhibitor

  5. uncompetitive inhibitor
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Malonic acid is an example of competitive inhibitor because malonic acid affects succinic dehydrogenase for oxidising succinic acid to fumaric acid. The enzyme succinic dehydrogenase is prevented by malonic acid due to its structural similarity with succinic acid. Therefore, there is a competition between malonic acid and succinic acid for binding on the active site of the enzyme succinic dehydrogenase.

Keep practicing — related questions