Which of the following components is involved in the initiation of transcription? Group of answer choices promoter primer start codon origin

How do activators facilitate transcription? Activator (inactive) Activator- binding site RNA polymerase Promoter Transcription normally off. RNA polymerase cannot bind to the promoter unless the activator is bound to the activator-binding site, but the activator is in an inactive form. Inducer Activator (active) Inducer helps turn transcription on. Transcription Inducer binds to the activator and changes its shape, allowing the activator to bind to the site. RNA polymerase can then bind to the promoter and initiate transcription.

During the transcription elongation step, an internal structure in the RNA Polymerase called _______________________ helps unwind the newly made RNA from the template DNA strand, allowing the RNA to exit through a rear channel on the RNA polymerase.     flap sigma rudder zipper alpha

Which of the following sequences would most likely be the site of the initiation of transcription? ТАТАААТА GCTAGCTA GGCGGCCC Impossible to tell

How would the removal of the TATA box in a eukaryotic gene impact transcription? Group of answer choices The gene would not be transcribed Transcription would occur more slowly Transcription would occur in the wrong direction Transcription would be less processive The wrong strand would be used as a template for synthesis

Inverted repeats in the DNA sequence being transcribed can lead to mRNA molecule that forms a hairpin loop and is often used terminate transcription. The transcription process supercolls DNA. the first statement is true. the second statement is false. the first statement is false. the second statement is true. Both statements are true. Both statements are false.

Which method is most likely used to regulate the expression of a gene that is active during embryonic development but then silenced for the rest of the life of the individual? Histone modification Post translational modifications Alternative Splicing Controlling RNA export from the nucleus