The cell membrane protects the cell, and lets certain items in and out of the cell. The walls of the police station protect the station and the doors let certain people and items in or out.

The nucleus is the brain or the head of the cell. The Chief's office is the head and controls the police station.

The Nucleolus is the main part of the nucleus. It creates ribosomes for the cell. The chief assembles teams to investigate things that happen. It runs the entire cell. The chief runs the entire station.

The mitochondrion is the power plant of the cell. It transforms chemical energy into ATP. The power plant produces energy for the police station

The ER stores proteins, carbs, and lipids. The break room contains all of the vending machines that have all of the food and water in the station.

The Golgi Apparatus takes proteins and other things and other things and transport them throughout the cell. The police cruisers transport criminals.

The vesicals hold proteins in the cell. The armory has weapons and other things they need stored inside it.

The beams in the walls and roof give the police station shape and form. This is the main thing that the cytoskeleton does inside the cell.

The lysosomes digest wast inside the cell. The bathroom gets rid of wast inside the station.

The ribosomes produce proteins for the cell. The vending machines "produce" food and drinks for the police station. This is their energy. Just like how the protein is a cells energy.