The nucleus maintains the security of the genes and controls the functions of the entire cell by regulating gene expression. This is why the nucleus is sometimes referred to as the control center, or the brain, of the cell.
Patagonia - region in southern South America between the Andes and the South Atlantic. Argentina, Argentine Republic - a republic in southern South America; second largest country in South America.
This amounts to an area roughly the same size as France, Germany and England combined. The Andean mountain range is the dominant feature of western Patagonia. The Patagonian Andes do not reach the heights found in Peru, Bolivia, northern Chile or Argentina, but they do have many glaciers because of their latitude. Chile also sits along the eastern edge of the seismically active ring of fire.