Nucleus

{
  "id": "MLC-T-ENV-019203",
  "term": "Nucleus",
  "field": "Environment",
  "definition": "1. The center of an atom, which contains protons and neutrons. The nucleus is the heaviest part of the atom.\n\n2. A nucleus is a membrane-bound organelle that contains the cell's chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.\n\n3. The cell structure that houses the chromosomes.\n\n4. The cellular organelle in eukaryotes that contains most of the genetic material.",
  "subject": "Air",
  "references": [
    "RadTown Glossary",
    "NIH Genetics Home Reference Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/nucleus/"
}