Final answer:
The statement is true. mRNA is transcribed and processed in the nucleus and then moves to the cytoplasm for translation into proteins by ribosomes.
Step-by-step explanation:
The statement that mRNA moves from the nucleus to the cytoplasm following RNA processing is true. In eukaryotic cells, protein formation begins with RNA transcription within the nucleus, where DNA is transcribed into RNA. This precursor to mRNA is called primary transcript, which undergoes several processing steps, including the addition of a 5' cap, a poly-A tail at the 3' end, and splicing where introns are excised and exons are joined together.
Once processing is complete, the resulting mature mRNA is transported out of the nucleus through the nuclear pore complex into the cytoplasm. There, it associates with ribosomes to facilitate RNA translation to protein, a process known as translation. This flow of information from DNA to RNA and then to protein synthesis is fundamental to cellular function and gene expression.