Question

question 17.5
what are all living things made of?
a. tissue
b. organs
c. cells
d. organ systems
18 of 39

Explanation:

The cell theory states that all living organisms are composed of cells. Tissues are made of cells, organs are made of tissues, and organ systems are made of organs. So the basic unit that all living things are made of is cells.

Answer:

C. cells