Cells With and Without Walls

There are millions of plants and animals on Earth. An elephant looks very different from a butterfly. Both of them look very different from a flower. But the elephant, butterfly, and flower are all made of cells. So are you!


A cell is the smallest part of a living thing that carries out actions that keep the thing alive. Some living things are made of only one cell. You are made of trillions of cells!


You know that plants and animals are different. The cells they are made of are different, too. Plant cells are found in any plant that uses photosynthesis to make its own food. An "animal" cell could be a tiny, one-celled animal like an amoeba. It could be any one of your body's cells. Elephants and butterflies are made of animal cells. Plants are made of plant cells.


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