Cell Biology (cytology)

What is a cell?


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October 21, 2017 6:29AM

Collection of living matter enclosed by a barrier that separates the cell from its surroundings.

The cell is the smallest functional and the smallest unit of an organism. A cell is a microscopic and smallest functional and structural unit of a living organism.

The metaphor of a "cell" is used to describe many things other than a plant, animal, or human cell. For examples:

  • any small compartment; "the cells of a honeycomb"
  • (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
  • a device that delivers an electric current as the result of a chemical reaction
  • a small unit serving as part of or as the nucleus of a larger political movement
  • cellular telephone: a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver
  • small room in which a monk or nun lives
  • a room where a prisoner is kept
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April 21, 2013 5:42PM

Cells are the basic structural unit of life.It is also the functinal unit of life.