-
Zacharias Janssen
Inventor of the first compound microscope and telescope. -
Robert Hooke
He looked at the pores in a sliver of a cork through a microscope and was the first one that used the term cells because when he looked at the cork it reminded him of monk cells. -
Anton Van Leeuwenhoek
Anton Van Leeuwenhoek found bacteria in his own dental scrapings and the dental scrapings of others. Since the bacteria looked like small animals he called them animacules -
Robert Brown
Contributed one of the earliest detailed descriptions of the cell nucleus. -
Matthias Schleiden
He discovered that all parts of plants are made up of cells or derivatives of cells. He also contributed to two parts of the Cell Theory those being, 1. All organisms are composed of one or more cells 2. The cell is the basic unit of structure ad organization in organisms -
Theodor Schwann
Pursuing Schleiden's line of research on animal tissues, Schwann not only verified the existence of cells, but he traced the development of many adult tissues from early embryo stages. The two parts of Cell Theory he contributed to were the same as Matthias Schleiden 1. All organisms are composed of one or more cells 2. The cell is the basic unit of structure ad organization in organisms -
Robert Remak
The scientist that proved all cells come from pre-existing cells. The part of Cell Theory he contributed to was 3. All cells come from pre-existing cells. -
Rudolf Virchow
He 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. He did not initially accept the evidence for cell division, believing that it occurs only in certain types of cells. When it dawned on him that Remak might be right, in 1855, he published Remak's work as his own, causing a falling-out between the two. -
Endosymbiotic Theory
The endosymbiotic theory was first articulated by the Russian botanist Konstantin Mereschkowsky in 1905. It's a theory stating that the eukaryotes evolved through a process whereby different types of free-living prokaryotes became incorporated inside larger prokaryotic cells and eventually developed into mitochondria, chloroplasts, and possibly other organelles.
