12. A block in the export pathway of messenger RNA from the nucleus to the cytoplasm would result in a direct decrease in the operational activities of
A.
Transcription in the nucleolus
B.
Translation on cytosolic ribosomes
✓
C.
DNA replication in the matrix
D.
Lipid synthesis in the smooth ER
📝 Explanation
mRNA must exit the nucleus to be translated into protein. Blocking export stalls translation in the cytoplasm.
📖 Additional Information
Transcription in the nucleolus
Translation on cytosolic ribosomes
DNA replication in the matrix
Lipid synthesis in the smooth ER
mRNA must exit the nucleus to be translated into protein. Blocking export stalls translation in the cytoplasm.
