Prokaryote cell (right) showing the nucleoid in comparison to a eukaryotic cell (left) showing the nucleus. The nucleoid (meaning nucleus-like) is an irregularly-shaped region within the cell of a prokaryote that contains all or most of the genetic material, called genophore.n contrast to the nucleus of a eukaryotic cell, it is not surrounded by a nuclear membrane. The genome of prokaryotic organisms generally is a circular, double-stranded piece of DNA, of which multiple copies may exist at any time. The length of a genome widely varies, but generally is at least a few million base pairs.
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 â¦ nd enzymes are either upregulated or downregulated, which then controls what processes the cell will perform.he nucleus of the cell contains much of the DNA of the cell, and it regulates the activities of that cell, whatever those activities are. The nucleus is composed of chemical â¦ structures that orchestrate chemical reactions that make the cell function.
The cell structure which controls the activities of the cell is the nucleus. The nucleus contains the genes which give the cell instructions. Other cell parts, such as mitocho â¦ ndria, have other functions. Mitochondria, for example, are where energy is released from food by the process of respiration.