This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Molecular Biology Techniques, Subject name: Biochemistry
[{'content': 'Which one of the following enzymes is obtained from Thermophilus aquaticus bacterium which is heat stable and used in PCR at high temperature? \nSelect and explain. \nA. DNA polymerase III, B. Endonuclease, C. Taq polymerase, D. DNA gyrase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ANSWER: (C) Taq polymeraseREF: Lehninger Principles of Biochemistry 4th edition page 321PCR uses a heat-stable DNA polymerase, such as the Taq polymerase (derived from a bacterium that lives at 90 cC), which remains active after every heating step and does not have to be replenished.', 'role': 'assistant'}]