A: Defined by NCBI, the function of the nuclear membrane is to separate the nucleus of a cell from the cytoplasm that surrounds it. The nuclear membrane, also called the nuclear envelope, is defined as a membrane that surrounds the genetic material contained within the nucleus of a cell. read more
Best Answer: Each cell is encircled by a membrane and most cells are equipped with an extensive intracellular membrane system. Membranes fence the cell's interior off from its surrounding. They let water, certain ions and substrates into the cell, are vital for the cell's energy budget and they excrete substances. They protect the cell. read more
The cell membrane (also known as the plasma membrane or cytoplasmic membrane) is a biological membrane that separates the interior of all cells from the outside environment. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. read more