The Cell Theory 1.All living things are composed of cells. 2.Cells are the basic units of structure and function in living things. 3.All cells are produced.

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Todays Objective Given information about the development of cell theory, summarize the contributions of scientists and/or state the cell theory.
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The Cell Theory 1.All living things are composed of cells. 2.Cells are the basic units of structure and function in living things. 3.All cells are produced from other cells.

Zacharias Janssen Invented the first compound microscope May have been helped by his father

Robert Hooke Looked at cork and called the square rooms “cells”

Anton Van Leeuwenhoek Looked at pond water and saw “animalcules” Looked at his teeth scrapings and discovered bacteria

Matthias Schleiden and Theodor Schwann Schleiden 1838 (studied plants) Schwann 1839 (studied animals) B Both men concluded that living things were made of cells.

Rudolf Virchow Concluded that all cells come from existing cells

Louis Pasteur Disproved spontaneous generation Proved that all life comes from life

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