why are many membranes that are present in cells interchangeable, please give an example as well?

Answer 1

The construction is pretty much alike. A lipid bi layer with pores. Golgi apparatus will bud off materials to be transported out of the cell. These buds will fuse with the plasma membrane and release the material to the outside. Food vacuoles in protist cells are formed from the plasma membrane. The endoplasmic reticulum and the nuclear membrane are continuous,

Answer 2

The nucleus is the smallest part of a cell.So,if the nucleus contains the nuclear membrane then the cell will automatically contain them.