What are some fast facts about the nucleus?

Answer 1

Here are some quick ones off the top of my head:

* The nucleus is a membrane-bound organelle inside all eukaryotic cells * It contains most of the genetic material (DNA) of the cell (the rest is stored in mitochondria) * All eukaryotic cells contain a nucleus by definition; the word comes from the Greek "eu" (true) and "karyon" (nut), which refers to the nucleus * Some cells of eukaryotic organisms (eg, humans) do not contain cells; for example, red blood cells are without a nucleus * DNA replication and transcription occur within the nucleus; transcribed RNA leaves the nucleus via nuclear pores * Ribosomes are made within the nucleolus, a structure found within the nucleus