Animal cells are the fundamental units of life in protozoa and multicellular animals. Each cell is a wonder in its own right, plus they work together as building blocks for tissues, organs, and organ systems. Animal cells are mostly microscopic, ranging in size from 1 to 100 micrometers.
5 days ago · cell, in biology, the basic membrane-bound unit that contains the fundamental molecules of life and of which all living things are composed. A single cell is often a complete organism in itself, such as a bacterium or yeast. Other cells acquire specialized functions as they mature.
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