Final answer:
The nucleus is the command center of the cell, containing the genetic instructions for all of the materials a cell will make. It controls many of the functions of the cell and contains DNA.
Step-by-step explanation:
The nucleus is the command center of the cell, containing the genetic instructions for all of the materials a cell will make. It is a spherical body containing many organelles, including the nucleolus. The nucleus controls many of the functions of the cell, such as protein synthesis, and contains DNA in chromosomes. It is surrounded by the nuclear membrane and is the locus of DNA/RNA synthesis and protein assembly.