In prokaryotes the process of translation can begin much before the mRNA is fully transcribed. This is because of:

Easy

A

Only one type of RNA Polymerase can transcribe all the three RNAs
B

RNA polymerase associated transiently with initiation and termination factors
C

There is no requirement of mRNA to undergo any processing to become active in prokaryotes
D

RNA polymerase is used for the process of transcription and translation

Solution

In bacteria, since the mRNA does not require any processing to become active, and also since transcription and translation take place in the same compartment (there is no separation of cytosol and nucleus in bacteria), many times the translation can begin much before the mRNA is fully transcribed. Consequently, the transcription and translation can be coupled in bacteria.

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