In which part of a eukaryotic cell is DNA transcribed?

DNA is transcribed in the nucleus of a eukaryotic cell. The nucleus serves as the repository for the cell's genetic material, where DNA is housed and organized into chromosomes. Transcription involves the synthesis of messenger RNA (mRNA) from a DNA template, a process initiated by RNA polymerase interacting with specific regions of the DNA.

Once the mRNA is synthesized in the nucleus, it undergoes processing, including capping, polyadenylation, and splicing, before it is transported to the cytoplasm for translation into proteins. This compartmentalization of transcription in the nucleus is a key characteristic of eukaryotic cells, distinguishing them from prokaryotic cells, where transcription and translation occur simultaneously in the cytoplasm.

Other options, such as the ribosome, cytoplasm, and endoplasmic reticulum, play critical roles in the process of protein synthesis and folding after transcription, but they do not serve as the site of transcription itself.