DNA is tightly wound in a double helix for much of the time.Which of the following enzymes unwinds the double helix and begins transcription of RNA?
A)RNA polymerase
B)DNA polymerase
C)Transcriptase
D)RNA isomerase
E)Complementary isomerase

Question

Quizplus · Accepted Answer

RNA polymerase is the enzyme that unwinds the double helix and begins transcription of RNA. DNA polymerase is involved in DNA replication, transcriptase is not a known enzyme, RNA isomerase and complementary isomerase are not valid enzyme names.

DNA Is Tightly Wound in a Double Helix for Much