key term - Nuclear envelope

Definition

The nuclear envelope is a double-membrane structure that encloses the nucleus of a cell, separating its contents from the cytoplasm. It features pores that regulate the movement of molecules between the nucleus and cytoplasm.

Related terms

Nucleus: The central part of a cell containing genetic material (DNA) and is considered the control center for cellular activities.

Cytoplasm:

The gel-like substance outside the nucleus in which organelles are suspended, serving as the site for most cellular processes.

Nuclear Pores:

Openings in the nuclear envelope that allow for selective exchange of substances between the nucleus and cytoplasm