Which organelle houses most of the cell's genetic material in eukaryotic cells?

• A. Nucleus
• B. Chloroplast
• C. Mitochondria
• D. Golgi apparatus

Answer: (A)

The main idea here is that the nucleus is the control center of the cell where the majority of genetic material is stored. In eukaryotic cells, DNA is organized into chromosomes inside the nucleus, and this genetic material is used to guide all cellular activities through transcription and replication. The nucleus is surrounded by a double membrane with pores that regulate access to the DNA, and it even contains the nucleolus, where ribosomal RNA is made to build ribosomes.

Chloroplasts and mitochondria do contain their own DNA, but only a small portion of the cell’s genes reside there, and many functions are carried out using nuclear genes. The Golgi apparatus, on the other hand, handles processing and shipping of proteins and has no DNA. So the organelle that houses most of the cell’s genetic material is the nucleus.