Final answer:
RNA polymerase is the enzyme required for transcription. It is similar to DNA polymerase, but there are some key differences. Transcription factors are necessary in eukaryotes to recruit the appropriate polymerase for transcription.
Step-by-step explanation:
The enzyme required for transcription is called RNA polymerase. It is similar to DNA polymerase, but it has some key differences. Unlike DNA polymerase, RNA polymerase can initiate RNA synthesis without a primer, and it incorporates uracil (U) nucleotides into RNA strands instead of thymine (T) nucleotides. In eukaryotes, transcription factors are required to help recruit the appropriate polymerase to the promoter region.