Why is the initial rate used to compare enzyme reactions?

  1. Product inhibits the enzyme only at the start
  2. Enzymes denature at the start
  3. The rate is fastest when substrate concentration is highest at the start
  4. The colorimeter only works at time zero
Answer

C) The rate is fastest when substrate concentration is highest at the start

Substrate is used up later, slowing rate. AS & A Level Biology · Topic 3 Enzymes · 3.1 Mode of action of enzymes

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