The city hall and the nucleus have similar functions. the city hall controls functions in the city like the nucleus controls the functions in animal cells. It is also a very important part of the city, like the nucleus is important to the cell.

The cell membrane is like security or airport security in particular because they both monitor and control what goes in and out of cities and cells. they also both protect what is in the cell or city.

Like the people on earth, the cytoplasm fills up all the space in the cell between organelles. it is always there and fills up the entire cell, like people fill up the city. without either of them, it would be empty and useless.

We chose a factory because in a city, a factory assembles and contains crucial supplies for the city like how the nucleolus assembles the DNA for the cell.

A cytoskeleton is like street construction because they both reinforce the shape and meet the needs of the organelles or people in the cell. This improves the road's function like how the cytoskeleton meets the need of the cell so it will function properly.

A rough ER transports materials and proteins all over the cell that are very important. This is like the semi trucks that transport important goods all over the city where they are needed.

A smooth ER is like a pharmacy because they both produce and create important proteins and steroids in a cell and city.

Ribosomes in a cell are like chefs in a restaurant. They both produce important protein that are needed for the cell or city to function.

The Golgi apparatus is similar to costco in a city. They both process, sort, and deliver proteins and important goods throughout the city or the cell.

A fedex truck is like a vesicle because they both transport materials within a certain area- either a the cytoplasm or a certain neighborhood

The department of water and power is just like the mitochondria in a cell because they each supply energy to either a city or a the cell. they are also both a very important powerhouse to the cell or region.

Any grocery store in a city is similar to a vacuole in a cell. this is because they both store and supply food, water, and other specialized needs throughout and to the city or cell.

A recycling center in a city is much like the lysosomes in a celll. they both break down or digest materials within the cell or city and turn them into something else useful.

taxi cabs are like centrioles in a cell because a taxi cab helps transport people from one side of the city to another, like how the centrioles help chromosomes move during cell division.

Gated communities in cities are similar to the cell wall of a cell. they both protect a certain area and also maintain the shape of the area. the fence around a gated community surrounds the perimeter and keeps it safe.

just like the chloroplast in a cell, factories that produce food are very crucial to a city. they are both important to make and produce food for the city or cell.

a subway station is like the centrosomes in a cell because they both transport or send out materials throughout the city or cell for their specific purpose. people go on subways usually to go to work, and centrosomes produce microtubles that have their specific job.