Cells are the smallest unit in biology. Everyone has cells and there are many of them inside of someone’s body. There are two main types: animal cells and plant cells. These are called the eukaryote and prokaryote. They look different and have a different make-up. If you look inside of each of those cells, they will look different and have different things in them.
For instance, an animal cell has a nucleus in the middle, but a plant cell does not. Animal cells or Eukaryote cells are inside of humans. Other parts of cells include the cell membranes and nucleic acids. For both types of cells, they are the basic unit of life. They also come from pre-existing cells and all living things like animals and plants are made up of cells.