Question

ribosomes can attach to prokaryotic messenger rna: question 10 options: before transcription is complete. once replication is complete. once the primary transcript has been released from rna polymerase. once post-transcriptional modification is complete.

Answer 1

In prokaryotic cells, ribosomes can begin translating mRNA into proteins before transcription is complete, as there is no nucleus to separate these processes.

Step-by-step explanation:

Ribosomes can attach to prokaryotic messenger RNA before transcription is complete.

This is because in prokaryotic cells, there is no membranous compartmentalization such as a nucleus separating the processes of transcription and translation.

Therefore, a prokaryotic mRNA can start to be translated into protein by ribosomes while the mRNA strand is still being synthesized by RNA polymerase.

This efficient process allows a prokaryotic cell to respond quickly to environmental signals requiring new proteins.

In contrast, eukaryotes have a nucleus that separates transcription and translation processes.

Eukaryotic mRNA must undergo post-transcriptional modifications, including 5' capping, 3' polyadenylation, and intron splicing, before it can be exported from the nucleus and translated by ribosomes in the cytoplasm.