The nucleus is a membrane-bound organelle found in eukaryotic cells, often referred to as the cell's control center. It contains the cell's genetic material in the form of DNA, which is organized into chromosomes. The nucleus is surrounded by a double membrane called the nuclear envelope, which has pores that regulate the movement of molecules in and out. Inside the nucleus, DNA is transcribed into RNA, which is then used to synthesize proteins, a process crucial for cellular function and growth. The nucleus also plays a key role in regulating gene expression, cell division, and maintaining genomic integrity. As the central hub for genetic information, the nucleus is essential for controlling cellular activities and ensuring proper cellular function.