A Plant Cell is Like a City
A plant cell is like a city because there are ways of transportation, education, protection, security, and shelter.
Everything inside of a cell contributes to one another. There is the nucleus, which is pretty much the whole operating system, just like in a city, there is a main thing it runs off of. Plus the brains of everyone else. A cell and a city both have different organized ways of functioning. One cannot function without the other. For example, in a city there needs to be a way of protection, like our police forces. If we do not have that, then people would attack one another and there would be chaos. Without the cell membrane to protect the other functions in a cell, viruses and other harmful things could attack it, causing the cell not to function correctly.
Also, the city needs energy, and so does a cell. Using other sources, such as electricity companies and wires, and food for personal energy, we have our ways of getting there to function correctly.. A cell does too. It has the Mitochondria, which gives the cell the energy it needs to function. A city also needs ways to produce and sell products within shops, to keep and make good money to have a running city, and a cell needs the ribosomes to produce proteins.
People have to get through a city, so we have roads and streets. The Golgi Apparatus takes care of that, by telling the molecules where they need to go. All in all, both cells and cities are alike because without different ways of function, they could not work at all.