What Is Cell Biology?Cell biology is the subdiscipline of biology that studies the basic unit of life, the cell. It deals with all aspects of the cell including cell anatomy, cell division ( mitosisand meiosis), and cell processes such as cell respiration, and cell death. Cell biology does not stand alone as a discipline but is closely related to other areas of biology such as genetics, molecular biology, and biochemistry. Based on one of the basic principles of biology, the cell theory, the study of cells would not have been possible without the invention of the microscope. With the advanced microscopes of today such as the Scanning Electron Microscope and Transmission Electron Microscope, cell biologists are able to obtain detailed images of the smallest of cell structures. Significant Events in Cell Biology There have been several significant events throughout history that have led to the development of the field of cell biology as it exists today. Below are a few of these major events: *.1655 - Robert Hooke gives first description of a cork tree cell. *.1674 - Leeuwenhoek views protozoa. *.1683 - Leeuwenhoek views bacteria. *.1831 - Robert Brown was first to identify the nucleusas an important cell component. *.1838 - Schleiden and Schwann introduce what would become the Cell Theory. *.1857 - Kolliker describes mitochondria. *.1869 - Miescher isolates DNA for the first time. *.1882 - Kock identifies bacteria. *.1898 - Golgi discovers the Golgi apparatus. *.1931 - Ruska builds the first Transmission Electron Microscope. *.1953 - Watson and Crick propose structure of DNA double-helix. *.1965 - First commercial Scanning Electron Microscope produced. *.1997 - First sheep cloned. *.1998 - Mice cloned. *.2003 - Human genome DNA sequence draft completed. °°◦::α∂мιη::◦° °◦>>✿•*¨`*•.☆Babloo farhan ☆.•*¨`*•✿▒ß▒Ä▒B▒£▒Ø▒Ø▒ ▒F▒Å▒R▒H▒Ä▒N▒
Posted on: Sun, 22 Sep 2013 04:52:59 +0000