The nucleus is a membrane-bound organelle found in eukaryotic cells that houses the cell's genetic material. It plays a crucial role in regulating gene expression and maintaining the integrity of DNA.
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The nucleus contains most of the cell's genetic material in the form of chromatin, which condenses into chromosomes during cell division.
It is surrounded by a double membrane called the nuclear envelope, which features nuclear pores for transport of molecules.
The nucleolus, located within the nucleus, is responsible for ribosome synthesis and assembly.
Nuclear DNA is organized with histone proteins to form nucleosomes, facilitating efficient packaging and regulation.
The nucleus coordinates cellular activities such as growth, metabolism, protein synthesis, and reproduction by controlling gene expression.