In Eukaryotes,all of the Different Types of RNA are Transcribed

Question

In eukaryotes,all of the different types of RNA are transcribed in the ____________.  
A) mitochondria
B) cytoplasm
C) ribosomes
D) nucleus
E) endoplasmic reticulum

Accepted Answer

Eukaryotic transcription occurs in the nucleus, where DNA is transcribed into all types of RNA including messenger RNA (mRNA), transfer RNA (tRNA), ribosomal RNA (rRNA), and regulatory non-coding RNAs. Mitochondria have their own transcription and translation systems, but do not transcribe all types of RNA found in eukaryotes. Cytoplasm and ribosomes are the sites of translation, but not transcription. The endoplasmic reticulum plays a role in protein synthesis and modification, but not RNA synthesis.