Observation is the first step of a new inventor

                                              BASIC UNIT OF LIFE
                                                        [CELL]

what is a cell ?
1.we can explain cell simply as,
                                                        Cell is a basic unit of structure in every thing.

  • secondly we want to know about the theory of the cell.
  • Cell theory states that the cell is the fundamental unit of life, and that all living things are composed of one or more cells or the secreted products of those cells (e.g. shells). All cells arise from other cells through cell division. In multicellular organisms, every cell in the organism's body derives ultimately from a single cell in a fertilized egg. The cell is also considered to be the basic unit in many pathological processes.[15] Additionally, the phenomenon of energy flow occurs in cells in processes that are part of the function known as metabolism. Finally, cells contain hereditary information (DNA) which is passed from cell to cell during cell division.

                 History of cell

The cell was first discovered by Robert Hooke in 1665. He examined a (under a coarse, compound microscope) very thin slices of cork and saw a multitude of tiny pores that he remarked looked like the walled compartments of a honeycomb. Because of this association, Hooke called them cells, the name they still bear. However, Hooke did not know their real structure or function.[1] Hooke's description of these cells (which were actually non-living cell walls) was published in Micrographia.[2]. His cell observations gave no indication of the nucleus and other organelles found in most living cells.
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Drawing of the structure of cork by Robert Hooke that appeared in Micrographia
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