History of the Cell Theory

Sidnie Martin

Robert Hooke

Hooke viewed a thin piece of cork under a microscope around January 1, 1653. He saw many small empty spaces contained by walls. He called them Cells and the name stuck.

1st part of the cell theory

Every living thing is composed of other cells.

Anton van Leeuwenhoek

Around the year 1670 Leeuwenhoek found bacteria, free living and parasitic microscope protists, sperm cells, blood cells, and much more. His research opened a whole new world of microscope life to science.

2nd part of the cell theory

Cells come from other existing cells.

3rd part of the cell theory

The cell is the smallest basic unit of life.