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 is the largest desert in the South American nation of Argentina, occupying a land surface area totalling about 200,000 square miles. It is primarily located in Argentina, though parts extend into Chile. Patagonia is bounded by the Atlantic Ocean to the east and the Andes Mountains to the west.