This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'True about polymerase chain reaction \nSelect and explain. \nA. Carried out by thermostable DNA polymerase, B. Exponential, C. Additive, D. Specific', 'role': 'user'}, {'content': 'Answer: A \nExplanation: New DNA strands are synthesized by Taq polymerize, this enzyme is derived from bacteria Thermus aquaticus , that are found in hot springsTherefore enzyme is not denatured at high temperature The polymerize reaction is allowed to take place at 72*c for 30 seconds in the presence of dNTPsRef: DM Vasudevan, 7th edition, page no: 638', 'role': 'assistant'}]