Increasing temperature above the optimum reduces rate because

  1. bonds holding the tertiary structure break, changing the active site
  2. molecules move more slowly
  3. substrate is used up
  4. the enzyme becomes a substrate
Answer

A) bonds holding the tertiary structure break, changing the active site

Denaturation. AS & A Level Biology · Topic 3 Enzymes · 3.2 Factors that affect enzyme action

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