Most simple definition for a cell?

Question

I would really like to hear the most simple definition someone can come up with for defining a cell.

Please anyone?

Answer 1

Hmm, lessee. A cell is:

1) A structure bound by a phospholipid bilayer,

2) containing mostly water inside,

3) which takes in energy and materials,

4) produces and hydrolyzes ATP to drive endergonic reactions,

5) stores genetic information as DNA,

6) transcribes that information into RNA,

7) and has ribosomes which translate that information into protein.

How was that?

Answer 2

A cell is the smallest unit of life. A cell can be alive all on its own or it can be combined with others to form tissues used in an organism.

Answer 3

a cell is the structural and functional unit of all known living organisms.

Answer 4

Cells are the basic building blocks for tissues, organs and any other existing, organic lifeform known to man.