Multiple Choice
In the context of mRNA export and nuclear structures, which statement best describes whether DNA can leave the nucleus in a typical eukaryotic cell?
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5. DNA to RNA to Protein
mRNA Export and Nuclear Structures
Multiple Choice
In eukaryotic cells, which nuclear structure is primarily responsible for making ribosomes by transcribing rRNA and assembling ribosomal subunits before their export to the cytoplasm?
A
Golgi apparatus
B
Nucleolus
C
Rough endoplasmic reticulum
D
Nuclear pore complex
Verified step by step guidance1
Identify the function described: making ribosomes by transcribing rRNA and assembling ribosomal subunits.
Recall that ribosomal RNA (rRNA) is transcribed inside the nucleus, specifically in a specialized region.
Understand that the nucleolus is a dense region within the nucleus where rRNA transcription and ribosome assembly occur.
Recognize that the Golgi apparatus is involved in protein modification and sorting, not ribosome production.
Note that the rough endoplasmic reticulum is the site of protein synthesis but does not transcribe rRNA or assemble ribosomal subunits, and the nuclear pore complex facilitates transport between nucleus and cytoplasm.
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