Synthesis of the precursor-mRNA molecule of various enzymes occurs in
A) nucleolus.
B) nucleus (excluding the nucleolus).
C) cytosol.
D) Golgi apparatus.
E) rough endoplasmic reticulum.

Question

Quizplus · Accepted Answer

Synthesis of the precursor-mRNA molecule of various enzymes occurs in the nucleus (excluding the nucleolus), where transcription takes place. Transcription results in the synthesis of the precursor-mRNA molecule, which is then processed and transported out of the nucleus to the cytosol for translation. The Golgi apparatus and rough endoplasmic reticulum are involved in protein processing and sorting, but not in mRNA synthesis. The nucleolus is involved in the synthesis of ribosomal RNA.

Synthesis of the Precursor-MRNA Molecule of Various Enzymes Occurs in