What does the phrase “cells are the functional units of life” mean?

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Detailed Solution

The structural and functional unit of life is the cell.

Every organism, whether it is a tiny bacterium or a complex human being, is made up of one or more cells. The structure of the body originates from cells, and the functions of the body depend on activities happening inside cells. Cells are the smallest living parts that can survive on their own and carry out all life processes.

Understanding cells as units:

Aspect	Explanation
Structural	Cells make up tissues and organs, giving organisms shape and form.
Functional	Cells perform respiration, growth, reproduction, waste removal, and response to environment.
Basic Unit	No living organism exists without cells; they are the foundation of life.

Thus, the cell is both the building block (structural) and the life-performing center (functional) of all living beings.

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