The Cell as a School
The Nucleus & Main Office
The nucleus is like the main office because it's the brain of the school. It controls the actions of the entire school similar to how the nucleus controls the actions of the cell.
Mitochondria & Gymnasium
This is where energy from food is used. In the gymnasium, students use the energy from food they've eaten during P.E. class.
Chloroplasts & Cafeteria
The cafeteria is like the chloroplasts because it creates food for the school. The chloroplasts create "food" or glucose for the cell by converting light energy.