-
Jan 1, 1577
Spontaneous generation is created
Helmont said living things come from nonliving things and created spontaneous generation -
Aristotle observed animals and plants (384 B.C.)
He observed how animals and plants were developed. This happened in 384 B.C, not 1593 -
Janssen creates the first microscope
Janssesn invented the first basic microscope. Without this invention, people would have never seen cells. -
Period: to
Cell Theory TImeline
-
Robert Hooke introduces the word cell to science
He saw the first cell under a microscope. -
Anton van Leeuwenhoek saw the first live cell
He saw the first live cell under a microscope. -
All organic beings originate from cells
Oken said that all organic beings originate from and consist of vesicles or cells. -
Robert Brown described the cell nucleus
He described the cell nucleus of the orchid. -
Matthias Schleiden & Theodor Schwann proposed cell theory
Matthias Schleiden discovered that plants were made up of cells. Theodor Schwann discovered that animals were made up of cells. -
sperm cells and egg cells are also cells
Albrecht von Roelliker discovered that sperm cells and egg cells are also cells. -
cells come from other cells
Rudolf Virchow concludes that cells conclude only from other existing cells. -
disproves spontaneous generation
Louis Pasteur ended spontaneous generation by saying that cells only come from other pre-existing cells. -
