Yes, all living things are made up of cells. This is one of the fundamental principles of biology.

Here's why:

* Cells are the basic unit of life: They are the smallest structures that can carry out all the processes necessary for life, such as metabolism, growth, and reproduction.

* Organisms can be unicellular or multicellular:

* Unicellular organisms, like bacteria and amoeba, are made up of just one cell.

* Multicellular organisms, like plants and animals, are made up of many cells working together.

* Viruses are not considered living: They are not made up of cells and require a host cell to replicate.

So, no matter how small or complex an organism is, it will always be composed of cells!