Location: The nucleolus is located in the center of the nucleus and is found in both plant and animal cells.
Structure: The nucleolus is made up mostly of RNA and proteins.
Function: The function of the nucleolus is to make ribosomes, which makes proteins, which in the long run keep you alive and well. Source:http://education-portal.com/academy/lesson/what-is-a-nucleolus-definition-function-quiz.html