Where do transcription and translation occur in eukaryotic cells?

• A. Both occur in the nucleus
• B. Transcription in the cytoplasm, translation in the nucleolus
• C. Transcription in the nucleus, translation in the cytoplasm
• D. Both occur in the cytoplasm

Answer: (C)

In eukaryotic cells, transcription occurs in the nucleus while translation takes place in the cytoplasm. This separation of processes is important for the regulation of gene expression. During transcription, the DNA is transcribed into messenger RNA (mRNA) inside the nucleus. After the mRNA is processed and transported out of the nucleus, it enters the cytoplasm where ribosomes translate the mRNA sequence into a polypeptide chain or protein.

This compartmentalization allows for various regulatory mechanisms to control gene expression, such as RNA splicing and modification before translation can occur. Thus, understanding this distinction is fundamental in cellular biology, as it illustrates how eukaryotic systems manage and process genetic information.