Home › MCQs › MDCAT Biology › Question #4280
Back to Questions
MDCAT Biology QUESTION #4280
Question 1
Enzyme activity decreases at very low or high pH because:
  • Substrate concentration increases
  • Enzymes become denatured✔️
  • Product formation increases
  • Temperature becomes constant
Correct Answer Explanation
Extreme pH values alter the ionization of amino acid R-groups at the active site, causing the enzyme to denature and lose its specific 3D shape.