* Non-living things: Things like rocks, water, air, and metals are not made of cells. These are inorganic materials, meaning they don't contain carbon-based molecules or the complex structures found in living organisms.
* Viruses: While viruses are very small and can infect cells, they are not considered living organisms themselves. They lack the machinery to reproduce on their own and must rely on host cells to replicate.
What is made up of cells?
* All living organisms: Plants, animals, fungi, bacteria, and even microscopic organisms like protists are all made up of cells. This is the fundamental basis of life as we know it.
Let me know if you have any other questions!
