Cell biology (formerly cytology, from the Greek kytos, "container") is a scientific discipline that studies cells – their physiological properties, their structure, the organelles they contain, interactions with their environment, their life cycle, division and death. This is done both on a microscopic and molecular level. Cell biology research encompasses both the great diversity of single-celled organisms like bacteria and protozoa, as well as the many specialized cells in multicellular organisms such as humans. Knowing the components of cells and how cells work is fundamental to all biological sciences. Appreciating the similarities and differences between cell types is particularly important to the fields of cell and molecular biology as well as to biomedical fields such as cancer research and developmental biology. These fundamental similarities and differences provide a unifying theme, sometimes allowing the principles learned from studying one cell type to be extrapolated and generalized to other cell types. Hence, research in cell biology is closely related to genetics, biochemistry, molecular biology, immunology, and developmental biology.
CHRONOLOGY OF SIGNIFICANT EVENTS IN CELL BIOLOGY | |
---|---|
YEAR | EVENT |
1500 | Jansen designed the first conpound microscope by containing two lenses. |
1665 | Robert Hooke examined a thin section of bottle cork and described the basic unit as 'cell'. |
1665-70 | Antony Von Leeuwen Hock observed unicellular organisms, described bacteria for the first time as ‘animacules'. |
1700-1800 | Further descriptions and drawings of cells in plants and animals were provided by various scientists. |
1831 | Robert Brown described the nucleus in plant cells. |
1838-39 | Sehleiden and Schwann proposed the cell theory. |
1840 | Purkioje proposed the term 'protoplasm’ to the contents of the cell. |
1855 | Virchow suggested that cells arise from pre-existing cells by a process of cell division. |
1866 | Haeckel eablished that nucleus was responsible for storing and transmitting hereditary characters. |
1866-68 | Cell division was described in detail. Chromosomes were discovered. |
1880-83 | Chloroplasts and other plastids were discovered. |
1890 | Mitochondria was discovered. |
1898 | Golgi apparatus was discovered. |
1900 | Mendelisrn, forgotten since 1865 was rediscovered. |
1930 | Electron microscopes were designed improving resolution. |
1946 to present | Electron microscopes were widely used revealing the ultra structure of cells |
Chronology of Significant Events in Cell Biology
Homework Assignment Help is World No 1 Online Assignment Help Company
@2010 - Copyright © All rights reserved | This is made with by Homework Assignment Help self
In case you face any problem or have any query please email us at :- info[@]homeworkassignmenthelp.com
Submit us an Assignment:
For Demo Class Click hereRead more
Our tutors start working only after the payment is made, to ensure that we are doing work only for serious clients and also our solution meets the required standard.
Getting homework help was never so easy you just need to follow following steps:
(for example: EST, Australian GMT etc)
any example or format you want the solutions to be in.
send you the price quoted by our tutor along with the time needed to solve the assignment
In case you face any problem or have any query please email us at :- info[@]homeworkassignmenthelp.com