You are presented with the question "Cells are the basic units of the structure and function of what?" and the following answer choices: 
- animals
 - Most plants
 - humans
 - organisms
 - cell walls
 - rock
 - cell membranes
 - mammals

Now knowing that cells are the basic units of the structure and function of living things and an organism is a living thing, choose the best answer.


 

    organisms     