試題詳解

1. Which of the following explains the events in late stage of phage T7 infection in E. coli?
(A) There is a high level of transcription of host genes.
(B) Host polymerase holoenzyme directs transcription.
(C) The host core enzyme participates in transcription in conjunction with the phage-encoded specific sigma factor.
(D) Phage T7-specific core polymerase participates in transcription in conjunction with the host sigma factor.
(E) The T7 phage -specific RNA polymerase specifies transcription of genes.