試題詳解

34. Which of the following statements about prokaryotic transcription is/are TRUE?
(A) The enzyme principally responsible for RNA synthesis in E. coli is a multisubunit enzyme.
(B) The first nucleotide incorporated into the RNA chain retains its 5'-triphosphate.
(C) The sigma (σ) subunit stays with the RNA Polymerase throughout synthesis.
(D) X Inverted-re peat sequences in the DA being transcribed can lead to termination
(E) The end ofthe new mRNA molecule in E. coli usually terminates in a string of A's.