The nucleus is the cell’s control center. It stores DNA and helps direct cell activities like growth, protein production, and cell division.

What it does

  • Stores the cell’s genetic information, or DNA.
  • Controls when genes are turned on or off, which affects protein synthesis.
  • Helps manage cell growth and division.
  • Contains the nucleolus, which helps make ribosomes.

Simple way to think about it

If the cell were a city, the nucleus would be the city hall: it keeps the instructions, sends out the plans, and helps coordinate what the cell does next.

Quick note

This refers to the cell nucleus , not the nucleus of an atom.