* Multicellular organisms: Yes, animals, plants, and fungi are all made up of millions, billions, or even trillions of cells! These cells work together, specializing in different functions to create a complex organism.
* Unicellular organisms: There are also living things called single-celled organisms, or unicellular organisms (like bacteria and amoebas). They are made up of only one cell, which does everything for them.
So, not all living things are made up of millions of cells, but many are.
