Which is the basic unit of life

Why cell is the basic unit of life? + Example
Cell isthe structural and functional unitoflife. Cell is a small unit which made the body of an organism which perform most of metabolic processes whichare vital to organism like respiration, protein synthesis and secretion and excretion of materials.

The Cell as the Basic Unit of Life - Essay
Schleiden and Schwann proposed the cell theory, which states that the cell isthebasicunitoflife and that new cells arise only from the reproduction of already existing cells via cell cycle, in 1839.