There are this tiny living things that make up other living things, which are called cells. Cells are made up of organelles and cytoplasm and when they are unicellular organisms they might contain flagellum and other parts.
→ Cells can be either eukaryotic, prokaryotic, plant-cells or animal-cells (which are both eukaryotic). The 4 images below shows you each one of them in their respective order.
NOTE - Cells have more divisions, such as epithelial, muscular, connective and nervous which are some basic tissue-cells.