A cell is a membrane-bound structure that presents itself as a functional unit independent of life (as in unicellular organisms, e.g. bacteria, protozoa, etc.), or as the structural or fundamental unit in a tissue. Biological specialized to perform a particular function in multicellular organisms (e.g. plants and animals).
Cell Definition:
In biology, a cell ([sɛl], "plural: cells") is defined as the structural, functional and biological unit of all organisms. It is a self-replicating autonomous unit that can exist as a functional unit independent of life (as in the case of a unicellular organism), or as a subunit in a multicellular organism (as in plants and animals) which performs a particular function of tissues and organs.
Etymology:
The term ”cell” came from Latin ”cella”, ”cellula”, meaning “a small room”.
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