During elongation,RNA polymerase has three prominent channels,or grooves.These channels provide sites for all of the following,except _____.
A)a site for the double-stranded DNA molecule
B)a site for the entry of ribonucleoside triphosphates
C)a site for the exit of the diphosphates removed from the nucleotide triphosphates
D)a site for the growing RNA strand

Question

Quizplus · Accepted Answer

RNA polymerase has channels for the DNA template, entry of ribonucleoside triphosphates, and exit of the growing RNA strand, but not specifically for the exit of diphosphates.

During Elongation,RNA Polymerase Has Three Prominent Channels,or Grooves