Cell theory

A prokaryote

In biology, cell theory is a scientific theory that describes the properties of cells, the basic unit of structure in every living thing. The initial development of the theory, during the mid-17th century, was made possible by advances in microscopy; the study of cells is called cell biology. Cell theory is one of the foundations of biology.

The three parts to the cell theory are as described below:

1. All living organisms are composed of one or more cells.

2. The cell is the basic unit of structure, function, and organization in all organisms.

3. All cells come from preexisting cells.

Hi :)

Hi :)

Hi :)

Hi :)

Further reading

• Turner W (1890). "The Cell Theory, Past and Present". J Anat Physiol. 24 (Pt 2): 253–87. PMC 1328050. PMID 17231856. {{cite journal}}: Unknown parameter |month= ignored (help)
• Tavassoli M (1980). "The cell theory: a foundation to the edifice of biology". Am. J. Pathol. 98 (1): 44. PMC 1903404. PMID 6985772. {{cite journal}}: Unknown parameter |month= ignored (help)

External links

• Mallery C (2008-02-11). "Cell Theory". Retrieved 2008-11-25.
• "Studying Cells Tutorial". 2004. Retrieved 2008-11-25.