pH changes affect enzymes mainly by

  1. adding phosphate groups
  2. altering ionic and hydrogen bonds in the tertiary structure
  3. changing the primary structure
  4. breaking peptide bonds
Answer

B) altering ionic and hydrogen bonds in the tertiary structure

H⁺ ions affect charges on R groups. AS & A Level Biology · Topic 3 Enzymes · 3.2 Factors that affect enzyme action

Biology MCQ · More A Level Biology: Enzymes MCQs · Practise