cell theroy

Ryan dreyer

cell theory

In biology, the cell theory is a scientific theory that describes the properties of cells, which are the basic unit of structure in all organisms and the basic unit of reproduction. The cell theory is a widely accepted explanation of the relationship between cells and living things.


The three main ideas to the cell theory are:

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

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

3. All cells arise from pre-existing, living cells


The initial development of the theory was made possible by the observations of Robert Hooke,Anton Van Leeuwenhoek,Matthais Schleiden, Therdor Schwann,Rudolf Virchow, which led to the development of the cell theory.


Robert Hooke

Born on July 28, 1635, Robert Hooke invented the term "cell" for describing biological organisms. In 1665 he published a book called Micrographia which describes observations that were made with microscopes and telescopes, as well as some original work in biology.


Theodor Schwann

Born on December 7, 1810, Theodore Schwaan was a German physiologist. His many contributions to biology include the development of cell theory, and the discovery of Schwann cells in the peripheral nervous system.


Anton Van Leeuwenhoek

Born on October 24, 1632 Anton Van Leeuwenhoek was considered to be the first microbiologist. He is best known for his work on the improvement of the microscope and for his contributions in the establishment of microbiology. Using his handcrafted microscopes, he was the first to observe and describe single-celled organisms, which he referred to as animalcules. They are now referred to as microorganisms. He was also the first to record microscopic observations of muscle fibers, bacteria, spermatozoa, and blood flow in capillaries (small blood vessels).



Matthais Shleiden

Born on April 5, 1804, Matthias Shleiden was a German botanist and co-founder of the cell theory, along with Theodor Schwann and Rudolf Virchow. He wrote Contributions to Phytogenesis (1838), which states that the different parts of the plant organism are composed of cells.




Rudolf Virchow

Born on October 13, 1821, Rudolf Virchow was a German doctor, anthropologist, pathologist, prehistorian, biologist, writer, editor, and politician, known for his advancement of public health. He is credited with important discoveries. His most widely known scientific contribution is his cell theory, which built on the work of Theodor Schwann. He is cited as the first to recognize leukemia cells.