Nucleus

Definition

The nucleus is an organelle found in eukaryotic cells that contains most of the cell's genetic material organized as DNA molecules along with proteins forming chromosomes.

Related terms

Nucleolus:

A small dense spherical structure in the nucleus of a cell during interphase, involved in protein synthesis and production of ribosomes.

Chromatin:

The material that makes up chromosomes, consisting of DNA, RNA, and proteins.

Nuclear Envelope:

A double membrane that encloses the nucleus within eukaryotic cells, providing a barrier between the nucleoplasm and cytoplasm.