Cell is the fundamental structural and functional unit of all living beings. The cell is as fundamental to biology as the atom is to physical sciences. All living things are made up of one or more cells. Cells are the smallest structures capable of independent existence and of performing basic life processes, such as taking in nutrients, expelling waste, and reproducing. Hence cell specialization is also considered as
cell differentiation.
All living beings, plants and animals, start their life with a single cell. Indeed, there are diverse forms of life existing as single−celled organisms or unicellular organisms to multicellular organisms; their bodies are composed of different kinds of specialized cells where they are organized as into higher levels of organization, such as tissue systems and organ systems. Cells are singled out as the organism's basic unit of
life.
read more.....
http://www.wonderwhizkids.com/index.php/cell-and-energy
cell differentiation.
All living beings, plants and animals, start their life with a single cell. Indeed, there are diverse forms of life existing as single−celled organisms or unicellular organisms to multicellular organisms; their bodies are composed of different kinds of specialized cells where they are organized as into higher levels of organization, such as tissue systems and organ systems. Cells are singled out as the organism's basic unit of
life.
read more.....
http://www.wonderwhizkids.com/index.php/cell-and-energy
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