Final answer:
False. mRNA cannot be translated while still in the nucleus of the cell.
Step-by-step explanation:
False. mRNA cannot be translated while still in the nucleus of the cell. In prokaryotic cells, transcription and translation can occur concurrently because both processes happen in the same 5' to 3' direction and in the cytoplasm of the cell. This allows prokaryotic cells to respond quickly to environmental signals requiring new proteins. However, in eukaryotic cells, transcription occurs in the nucleus while translation occurs in the cytoplasm, so simultaneous transcription and translation is not possible.