is the scientific study of life,it classifies and describes organisms,their functions,how species comes into existence and their interactions they have with each other and with the natural environment.

Thursday, March 13, 2008

Cell Theory


The cell is the fundamental unit of life. Cell theory states that all living things are composed of one or more cells, or the secreted products of those cells, for example, shell and bone. Cells arise from other cells through cell division, and in multicellular organisms, every cell in the organism's body is produced from a single cell in a fertilized egg. Furthermore, the cell is considered to be the basic part of the pathological processes of an organism.

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