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Showing posts from October 16, 2016

THE LIVING CELL

The word cell , comes from the latin word, ' cellula ' meaning a small room or a monk's tiny bare room. This descriptive name, was chosen by an English scientist Robert Hooke in the book he published in 1665, after he examined microscopically, cork tissue (a plant material) and saw that they contain neatly arranged little chambers. He compared this chambers to the room monk's lived in and he called them cells. In 1835, a french microscopic zoologist Felix Dujardin, examined a thin slice of animal tissue under much improved microscope and discovered that the cells have content (jelly like material). He named the cntent sarcode. In the same year, Czech experimental physiologist,  Johannes Evangelista Purkinje observed the presence of small granules while looking at the plant tissue through a microscope. Later in 1839, Purkinje named the content, protoplasm, Hugo Von Mohl a German botanist also in 1846 named it protoplasm. In 1838, Mathias Jakob  Schleiden, a germ