In a biological cell (Cell) is a structural and functional unit of the smallest organisms, virtually all types. Sometimes called a unit is a component of life (the "building blocks of life"), certain types of organisms are single-celled organisms (unicellular organism) such as bacteria, yeast, but other types of organisms, such as plants, animals are multicellular organisms (the multicellular organism) (human cells is approximately 100 trillion or 1014 cells).
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