Question

A fibrous layer of proteins lining the inner nuclear membrane of eukaryotic cells is called the ______.

1) nuclear lamina
2) nucleolus
3) nuclear envelope
4) nuclear matrix

Answer 1

The nuclear lamina is the fibrous protein layer lining the inner nuclear membrane, providing structural support to the nucleus.

Step-by-step explanation:

The fibrous layer of proteins lining the inner nuclear membrane of eukaryotic cells is called the nuclear lamina. This structure is composed of intermediate filaments, predominantly lamins, and provides essential structural support to the nucleus.

It is found just inside the nuclear envelope, which is a double phospholipid bilayer that encloses the nucleus. The nuclear envelope itself contains nuclear pores, large protein complexes that regulate the movement of materials in and out of the nucleus.