This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
If you are referring to Nucleus. 

Nucleus (Chemistry)
The central part of an atom, containing protons and electrons.
Nucleus (Biology)
A cell organelle that is only present on eukaryotic cells, that functions as the brain of the cell, it contains Deoxyribonucleic Acid or DNA, and the Nucleolus that serves as the factory for ribosome synthesis, to translate mRNA into Protein. 
Comment has been deleted
Comment has been deleted