Final answer:
In prokaryotic gene expression, transcription and translation are closely coupled in time and space. This allows for a rapid cellular response in prokaryotes.
Step-by-step explanation:
In prokaryotic gene expression, transcription and translation are closely coupled in time and space. This means that they occur simultaneously and in close proximity to each other.
Unlike prokaryotes, in eukaryotic gene expression, transcription and translation are physically separated. Transcription occurs in the nucleus, while translation occurs in the cytoplasm or in association with the rough endoplasmic reticulum.
The close coupling of transcription and translation in prokaryotes allows for a rapid cellular response to environmental cues, as protein synthesis can start as soon as the mRNA becomes available.