How Are RNA Hairpin Turns Related to Transcriptional Termination in E

question 15

Multiple Choice

How are RNA hairpin turns related to transcriptional termination in E. coli?

• A) The turns are formed from complementary base pairing and cause separation of the RNA transcript and RNA polymerase.
• B) A three-base repeat signals a stop sequence, and the RNA transcript is released.
• C) Release factors bind to sites on the hairpin turn, causing release of the RNA transcript.
• D) The hairpin turn prevents more nucleoside triphosphates from entering the active site of the enzymes, effectively shutting off the process of polymerization.

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