A major hallmark of eukaryotic cells is that they store their genetic material in the nucleus, a compartment that is separate from the cytosol. The nuclear envelope is the double membrane structure that surrounds the nucleus in eukaryotic cells and provides this compartmentalization.
What is the definition of a nuclear envelope?
nuclear envelope. The double-layered membrane enclosing the nucleus of a eukaryotic cell. The nuclear envelope has pores that allow the passage of materials into and out of the nucleus. Also called nuclear membrane.
What is the main function of the cell nucleus?
This organelle has two major functions: it stores the cell’s hereditary material, or DNA, and it coordinates the cell’s activities, which include growth, intermediary metabolism, protein synthesis, and reproduction (cell division). Only the cells of advanced organisms, known as eukaryotes, have a nucleus.