Final answer:
Eukaryotic ribosomal RNA is transcribed in C. the nucleolus, a region within the nucleus, which is a primary distinction from prokaryotic cells that conduct transcription and translation in the cytoplasm.
Step-by-step explanation:
The eukaryotic ribosomal RNA is transcribed in the nucleolus of eukaryotic cells. This is an important distinction from prokaryotic cells where their simpler structure allows transcription and translation to take place in the same cellular compartment, the cytoplasm. The nucleolus is a specified region within the nucleus where ribosomal RNA (rRNA) is produced and the initial stages of ribosome assembly occur before they are transported to the cytoplasm for protein synthesis.
The RNA components of ribosomes are transcribed in the nucleolus of eukaryotic cells. The nucleolus is located within the nucleus and is responsible for ribosomal synthesis and the initial stages of ribosome assembly. Eukaryotic cells have 80S ribosomes in the rough endoplasmic reticulum and cytoplasm, as well as 70S ribosomes in mitochondria and chloroplasts. Ribosomes are not exclusively found in prokaryotic cells.