Question

which choice below is in the correct order of organization from simple to more complex?
○ atom; molecule; cell
○ molecule; atom; cell
○ cell; atom; molecule
○ atom; cell; molecule

Explanation:

The hierarchical order from the simplest to the most complex structural unit is: atom (the basic unit of matter) → molecule (formed by the combination of atoms) → cell (the basic structural and functional unit of life, composed of various molecules).

Answer:

A. atom; molecule; cell