Cell theory

By: Faith Giovanini

The cell theory

Cell theory refers to the idea that cells are the basic unit of structure in every living thing. This theory is one of the foundations of biology. The theory says that new cells are formed from other existing cells, and that the cell is a fundamental unit of structure, function and organization in all living organisms.

Robert Hooke

In 1665, Robert Hooke a English natural philosopher, saw the insides of a cork with a compound microscope. He could only see the cell walls with hollow insides. Robert identified the walls to be individual cells that's is where the name "cell" came from.

Anton van Leeuwenhoek

Leeuwenhoek was a scientist famous for the discovery of Bacteria, free-living and parasitic microscopic protists, sperm cells, blood cells, microscopic nematodes and rotifers, and much more. He also made a microscope.


Matthias Schleiden

Shleiden cocluded that all plants are made of cells.


Theodore Schwann

Schwann studied animal tissue and used a microscope to conclude that all animal organisms are made up of cells that produce other cells and so on.


Rudolf Virchcow

Virchow was the first to recognize leukemia cells. He also was one of the first to accept the work of Robert Remak, who showed the origins of cells was the division of pre-existing cells.