The Cell Nucleus
By Chloe Kabat and Max Zastrow
A nucleus is located in a eukaryotic cell, but not a prokaryotic cell. The nucleus is about 10 microns in diameter. It is wrapped entirely wrapped in nuclear membrane. A nucleus contains chromatin, which is made out of DNA, RNA, proteins, and chromosomes.
The nucleus also contains the nucleolus, which makes proteins for the cell. It makes what is called rRNA, or ribosomal RNA. If the nucleus wasn't in the cell, it wouldn't have any DNA, power, or brain to control it.