Cell Theory Timeline

Time Line

Robert Hooke

Jakob Sclieden was a german botanist that found cells in plants, and Theodor Scwann was a zoologist that found cells in animals. They were both co-founders of the cell theory.

Robert Brown was known for discovering the cell nucleus, and gave one of the earliest detailed descriptions of the cell nucleus.

1674

Anton van Leeuwenhoek

Robert Brown

1839

1855

Jakob Schlieden & Theodor Schwann

Rudolph Carl Virchow

Cell Theory TimelineAlex Moore

1827

1855

Leeuwenhoek is commonly known as the "Father of Microbiology", as he was the first person to ever see microorganisms.He later improved the microscope, and contributed towards the establishment of microbiology.

Rudolph Carl Virchow concluded that cells were made from existing cells, because existing cells divided to form new cells.

Louis Pasteur

Pasteur made significant discoveries in chemistry, including treatments and research of many diseases, and a resolution to the problem concerning the nature of tartaric acid.

Hooke termed the word cell for describing biological organisms, because he said they resembled monks' cells.

1665

The three principles of 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, and 3) All cells arise from pre-existing, living cells.

One exception to the cell theory is a virus. Viruses are considered alive by some, yet they are not made up of cells. Viruses have many features of life, but according to the cell theory, they are not alive.

Three Principles of Cell Theory

One Exception to the Cell Theory