What is the function of the nuclear envelope?

The nuclear envelope serves a crucial function in the cell by controlling the passage of materials into and out of the nucleus. This double-membrane structure surrounds the nucleus, which contains the cell's genetic material. The nuclear envelope is equipped with nuclear pores that selectively allow the movement of molecules such as RNA and proteins between the nucleus and the cytoplasm.

This selective permeability is essential for maintaining the integrity of the genetic material inside the nucleus while enabling the necessary communication with the cytoplasm, where protein synthesis and other vital processes occur. The ability to regulate what enters and exits the nucleus is pivotal for the cell's function and overall homeostasis.

Other functions mentioned, such as providing energy, anchoring chromosomes, or producing ribosomes, are attributed to different cellular structures and processes, making them not applicable to the role of the nuclear envelope.