In science, we are learning all about cells. We are learning all the parts and what they do. Here are some cell organells: the mitochondria, the endoplasmic reticulum, the Golgi body, cytoplasm, chlorophyll, cloroplast, nucleus, nucleolus, cell membrane, and cell wall. It's all pretty interesting. We are trying to relate them to things in a city or town by what they do for the cell.