the cell membrane allows things to enter or leave the cell like shipping trucks, the cytoplasm is like a factory floor where all the workers stay to do their jobs, the nucleus is the boss who controls all of the cells activity and tells them what to do as well as contain genetic material, nucleus membrane is like the boss’ office and regulates who goes in and out of the nucleus office, and the mitochondria is the power plant of the whole factory because it provides energy to the cell.