Final answer:
The inner nuclear membrane of a cell is lined by a layer of proteins known as the nuclear lamina, which helps give structure to the nucleus and organizes chromatin.
Step-by-step explanation:
In most eukaryotic cells, the inner nuclear membrane of the cell is lined by a fibrous layer of proteins called the nuclear lamina. The nuclear envelope consists of two phospholipid bilayers, an outer membrane and an inner membrane, that encase the nucleus.
The nuclear lamina provides structural support, helps organize chromatin, and regulates important cellular events such as DNA replication and cell division. The inner and outer membranes of the nuclear envelope are punctuated by nuclear pores, which enable the transport of materials between the nucleus and the cytoplasm.