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Answers. Relevance. Rating Newest Oldest. Best Answer: The nuclear membrane is the same thing as the nuclear envelope. It keeps the contents of the nucleus separate from the rest of the cell. The nuclear membrane does have pores that allow ribosomes and mRNA to leave the nucleus on their way to the cytoplasm.It's also interesting that the nuclear membrane is double-two membranes together, actually.Source(s):t keeps the contents of the nucleus separate from the rest of the cell. The nuclear membrane does have pores that allow ribosomes and mRNA to leave the nucleus on their way to the cytoplasm. It's also interesting that the nuclear membrane is double-two membranes together, actually. Source(s):
cell membrane. A cell membrane is like a cell's gatekeeper. It's the outer layer that surrounds a cell, letting substances in â or keeping them out. A membrane is a barrier that offers protection, like a rubber membrane that keeps rain from seeping under your roof. A cell membrane surrounds and protects the contents of a cell. It controls which substances can enter and exit the cell. The membrane also gives a cell its shape and enables the cell to attach to other cells, forming tissues.