It needs nucleolus.
Nucleus of the Cell Think of it as the Control Center or Headquarters of the cell. The nucleus of the cell contains much of the DNA of the cell, and it regulates the activities of that cell, whatever those activities are. Basically it controls everything that happens inside the cell, it's like a boss of the cell. People also call it the brain of the cell. But, the nucleus does not control everything. Inside of the nucleus may be an organelle called the nucleolus. This organelle holds the RNA of the cell: it is composed of proteins and nucleic acids. Answer 2. The main functions of nucleus are 3 specific biochemical reactions that control whole life and activities of cells. The nucleus regulates all cell activity. It does this by controlling the enzymes present. The chromatin is composed of DNA. DNA contains the information for the production of proteins. This information is encoded in the 4 DNA bases.  The nucleus has several major functions. First, it is the storage location for DNA, the genetic material of the cell. Second, it is the control center where various proteins a … nd enzymes are either upregulated or downregulated, which then controls what processes the cell will perform. nucleus is the brain that controls the cell and holds the DNA.        Cell membrane   Controls what substances can get into and out of the cell.   Cytoplasm …   Jelly-like substance, where chemical reactions happen. In plant cells there's a thin lining, whereas in animal cells most of the cell is cytoplas Throughout the life of a cell, chromatin fibers take on different forms inside the nucleus. During interphase, when the cell is carrying out its normal functions, the chromatin is dispersed throughout the nucleus in what appears to be a tangle of fibers. In these organisms, all the cell's information and administrative functions are dispersed throughout the cytoplasm. The spherical nucleus occupies about 10 percent of a cell's volume, making it the cell's most prominent feature. Nucleus is the control center of the cell. The genes inside the nucleus tell the cell what to do, and thus, tells the body what to do. There are also nucleolus inside th … e nucleus. Nucleolus makes parts of ribosomes that are sent out to the cytoplasm. nucleus is the brain that controls the cell and holds the DNA.        Cell membrane   Controls what substances can get into and out of the cell.   Cytoplasm …   Jelly-like substance, where chemical reactions happen. In plant cells there's a thin lining, whereas in animal cells most of the cell is Most of the nuclear material consists of chromatin, the unstructured form of the cell's DNA that will organize to form chromosomes during mitosis or cell division. Also inside the nucleus is the nucleolus, an organelle that synthesizes protein-producing macromolecular assemblies called ribosomes. In these organisms, all the cell's information and administrative functions are dispersed throughout the cytoplasm. The spherical nucleus occupies about 10 percent of a cell's volume, making it the cell's most prominent feature. In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many. Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression —the nucleus is, therefore, the control center of the cell. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many. Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes.
http://www.answers.com/Q/What_does_a_nucleus_do http://www.ibiblio.org/virtualcell/textbook/chapter3/nucf.htm http://www.answers.com/Q/What_are_the_functions_of_the_nucleus http://micro.magnet.fsu.edu/cells/plants/nucleus.html http://www.answers.com/Q/What_are_the_functions_of_the_nucleus http://micro.magnet.fsu.edu/cells/plants/nucleus.html https://en.wikipedia.org/wiki/Cell_nucleus https://en.wikipedia.org/wiki/Cell_nucleus
what does the nucleus need to function