Answer the following question given this paragraph: 

Cells may be small in size, but they are extremely important to life. Like all other living things, you are made of cells. Cells are the basis of life, and without cells, life as we know it would not exist. You will learn more about these amazing building blocks of life when you read this chapter.


Q: What basic structures are called the building blocks of life and comprise all living things?


A:
cells