Transcription

Question 1

Phases of transcription - elongation

Answer 1

RNA polymerase synthesises RNA molecule by adding new nucleotides to the 3’ end of the transcript
Uses the 2 DNA strands as a template

Question 2

Phases of transcription - termination

Answer 2

RNA polymerase reaches the termination sequence (which is palindromic which forms a hairpin loop causing the enzyme to stall) and the RNA transcript is released

Question 3

Phases of transcription - initiation

Answer 3

RNA polymerase binds to the gene promoter (this depends on its sigma subunit) and separates the DNA strands