This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Molecular Genetics, Subject name: Biochemistry
[{'content': 'Unwinding Enzyme in DNA synthesis: \nSelect and explain. \nA. Helicase, B. Primase, C. DNA Polymerase, D. Transcriptase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. Helicase(Ref: Harper 31/e page 364)Classes of proteins involved in DNA replicationProteinFunctionDNA polymerasesDeoxynucleotide polymerizationHelicasesProcessive unwinding of DNATopoisomerasesRelieve torsional strain that results from helicase-induced unwindingProteinFunctionDNA primaseInitiates synthesis of RNA primersSingle-strand binding proteinsPrevent premature reannealing of dsDNADNA ligaseSeals the single strand nick between the Nascent chain and Okazaki fragments on lagging strand', 'role': 'assistant'}]