This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
RNA polymerase is 
Select and explain. 
A. DNA dependent RNA polymerase, B. RNA dependent DNA polymerase, C. DNA dependent DNA polymerase, D. RNA dependent RNA polymerase
A: DNA dependent RNA polymerase
Answer: A: DNA dependent RNA polymerase 
Explanation: Ans. is 'a' i.e., DNA dependent RNA polymerase The major enzyme involved in transcription (i.e. synthesis of DNA to RNA) is RNA polymerase.It is DNA dependent RNA polymerase.DNA dependent DNA polymerase DNA plymerase (In DNA replication)DNA dependent RNA polymerase - RNA polymerase (In transcription)RNA dependent DNA polymerase -> Reverse transcripatase (In reverse transcription)