science homework

Aristotle

350 BCE

aristotle realized that to reproduce their are multiple stages of life
https://embryo.asu.edu/pages/aristotle-384-322-bce#:~:text=Through%20his%20study%20of%20chick,a%20theory%20later%20called%20epigenesis.

Cell Theory

Period: 300 BCE to Jan 1, 2000

Jan Baptiste van Helmont

1650

Thought of the early theory of photosynthesis
https://prezi.com/2jgbwwgjdehc/cell-theory-and-discovery-of-the-microscope/#:~:text=Jean%20Baptiste%20van%20Helmont%20contributed,important%20early%20contribution%20to%20photosynthesis.&text=This%20helped%20him%20to%20prove,soil%20was%20a%20wrong%20statement.

Antoni van Leeuwenhoek

1655

Invented the first single lense microscope. https://science.howstuffworks.com/innovation/scientific-experiments/scientific-method4.htm

Robert Hooke

1660

observed cork cells https://science.howstuffworks.com/innovation/scientific-experiments/scientific-method4.htm

Lorenz Oken

1805

said that all living things come from cells
http://fig.cox.miami.edu/~cmallery/150/unity/cell.text.htm#:~:text=German%20natur%2Dphilosopher%20and%20microscopist,in%20medicine%20at%20Freiburg%20University.&text=It%20is%20reported%20that%20in,statement%20of%20a%20cell%20theory.

Matthias Jakob Schleiden

1829

He worked with plant samples and figured out that all plants were composed of cells
https://science.howstuffworks.com/innovation/scientific-experiments/scientific-method4.htm

Robert Brown

1831

Discoved the nucleus and what it did
https://study.com/academy/lesson/robert-brown-cell-theory-inventions-discoveries.html#:~:text=Brown%20published%20his%20research%20findings,half%20of%20the%20cell%20theory.

Theodor Schwann

1839

Followed up Schleiden's idea but with animal samples
https://science.howstuffworks.com/innovation/scientific-experiments/scientific-method4.htm

Rudolf Virchow

1845

He discoved that all cells came from preexisting cells
https://www.britannica.com/science/cell-theory

Albert von Roelliker

1850

He discoved the cellurlar structure of tissue
https://www.britannica.com/biography/Rudolf-Albert-von-Kolliker

Louis Pasteur

1860

He provided the final expieriment that proved that spontanious generation is not real and he invented pasturization so that we can stop food from going bad for a lot longer
https://www.preceden.com/timelines/183224-the-cell-theory#:~:text=Louis%20Pasteur%20contributed%20to%20the,broth%20if%20air%20was%20exposed.

Zacharias Janssen

1955

Invented the first compound microscope
https://www.sutori.com/story/our-cell-theory-timeline--ysqPf9CgJguMXPyQDfDXsv2g