sejtmagú

Sejtmagú is a Hungarian term that translates to "nucleus-containing" or "eukaryotic" in biological contexts. It refers to cells that possess a true nucleus, which is a membrane-bound organelle containing the cell's genetic material. This is in contrast to prokaryotic cells, which lack a membrane-bound nucleus.

The presence of a nucleus is a defining characteristic of eukaryotic organisms, which include animals, plants, fungi, and protists. Within the nucleus, the DNA is organized into chromosomes. This compartmentalization allows for more complex regulation of gene expression and DNA replication. Eukaryotic cells also typically contain other membrane-bound organelles, such as mitochondria, endoplasmic reticulum, and Golgi apparatus, each with specialized functions. The development of the nucleus is considered a major evolutionary step, enabling the development of multicellularity and greater organismal complexity. Therefore, the term sejtmagú highlights this fundamental feature of cellular organization in eukaryotes.