Nucleus: A membrane-certain organelle that properties the cell’s DNA, arranged into linear chromosomes connected to histone proteins. Encased by the nuclear envelope, the nucleus makes certain the DNA’s security from opportunity external threats. Inside the nucleus, the nucleolus is to blame for assembling ribosome subunits. Cell nucleus: A cell's details https://maps.app.goo.gl/UmD5JM5ww6NgkMzV9