In Prokaryotes,control of Gene Expression is Mainly at the Level

Question

In prokaryotes,control of gene expression is mainly at the level of ____.  
A) transcription
B) transcript processing
C) transport
D) translation
E) post-translation

Accepted Answer

In prokaryotes, gene expression is mainly controlled at the level of transcription. This is achieved through a variety of mechanisms, including the regulation of RNA polymerase activity, the action of transcription factors and repressors, and the use of alternative promoters and terminators. Transcriptional control allows prokaryotes to respond quickly to changes in their environment by turning genes on or off as needed. While other levels of gene expression control may also occur in prokaryotes, such as post-transcriptional regulation, transcription remains the primary site of regulation.