The cell membrane is like the gates of a city because it controls what comes in and out and is a boundary.

Cytoplasm is like the road system of a city because everything is built around it, just like the organelles are suspended in the cytoplasm.

The nucleus is like the Town Hall center of a city because it controls the city, just like a nucleus. Also it sends the information to the city, just like a nucleus sends information to the rest of the cell.

A cell's cytoskeleton is like the structures of the buildings in a city because it gives the city its shape and holds the buildings together.

The smooth ER is like a recycling center in a city because it takes in harmful substances that are taken in by the organism, cleansed, and sent back into the rest of the cell.

The rough ER is like a postal office in a city because it packages things and sends them to other parts of the cell.

The ribosome in a cell is like a construction site in a city because it creates buildings useful to the city.

The Golgi apparatus is like the mail carrier of the city because it packages and distributes things that are useful to the cell.

The vesicle in a cell is like a train or Metro system because it transports people throughout the city, like a vesicle transports materials throughout the cell.

The mitochondria in a cell is like the electric company of a city because it produces energy for the cell, much like an electric company produces electricity for the city.

The central vacuole in a cell is like the public storage in a city because a vacuole stores nutrients for the cell, like a storage unit stores important materials for residents in the city.

Lysosomes are like landfills in a city because they break down waste, just like a landfill does.

The cell wall is like the borders of a city because the cell wall is outside the cell membrane, just like a border is right outside of the gates.

A chloroplast is like a solar panel because solar panels absorb the sun's energy, much like chloroplast does.