Question

A Click Submit to complete this assessment estion 10 Which of the following is NOT true of RNA synthesis by RNA polymerase? ORNA synthesis is less processive during elongation than during initiation. Synthesis begins with the polymerase binding two INTP molecules. The polymerase frequently releases the nascent transcript before it reaches 8-10 nucleotides in leng The addition of an INTP to a growing transcript is a magnesium ion-dependent reaction. All of the choices given are true. 4 Click Submit to complete this assessment.

Answer 1

Option 1 - RNA synthesis is less processive during elongation than during initiation. - FALSE

During transcription when the initiation is started at promoter, the nucleotides are added slowly at promoter until the 12 nucleotide bases are added and then the RNA polymerase removes the promoter and proceeds to the elongation phase in which the nucleotides are added very fast due to the increased efficiency RNA polymerase. Thats why the synthesis of RNA is more processive in elongation compared to that in initiation.