What Is The Organelles And Cell Levels Of Biological Organization?
A large number of different micro molecules and macromolecules arrange themselves in a way to form cells and their organelles. The bacteria and most protests consist of a single cell. The most fungi, plants and animals, consist of up to trillion of the cells. A cell is the smallest unit of the living organisms. It is the structural and functional unit of organ and ultimately, organisms. In the earlier part of nineteenth century the cell was described as having a limiting outer membrane, an interior nucleus and a large mass of cytoplasm surrounding the nucleus. With the development of high-resolution microscopes, electron microscope and with the use of vital stains much details of the cell structure have been studied. Many sub cellular structures like mitochondria, Golgi complex, endoplasmic reticulum, ribosome etc. have been studied; it has become obvious that functions of the cells are accomplished by the specialized structure comparable to the organs of the body. These structures are
