The Smallest Unit of Life That Can Exist as a Separate

Question

The smallest unit of life that can exist as a separate entity is a(n)___________.  
A) cell
B) molecule
C) organ
D) population
E) ecosystem

Accepted Answer

A cell is the smallest unit of life that can exist as a separate entity. Molecules are smaller than cells and cannot exist independently as they need to be part of a cell or organism. Organs are made up of multiple tissues and cannot exist on their own. Populations and ecosystems are made up of multiple organisms and are not individual units of life.