Taq polymerase is used in PCR because it

  1. works best at 37 °C
  2. joins fragments
  3. is heat-stable and not denatured at high temperatures
  4. cuts DNA
Answer

C) is heat-stable and not denatured at high temperatures

From a thermophilic bacterium. AS & A Level Biology · Topic 19 Genetic Technology · 19.1 Principles of genetic technology

Biology MCQ · More A Level Biology: Genetic technology MCQs · Practise