The Cell Theory.

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Students Will: summarize the contributions scientists have made toward the cell theory state the cell theory.
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Presentation transcript:

The Cell Theory

The Cell Theory The development and refinement of magnifying lenses and light microscopes made the observation and description of microscopic organisms and living cells possible.

The Cell Theory Many scientists contributed to the cell theory

The Cell Theory 3 parts to the cell theory: 1. The cell is the basic unit of life 2. All living things are made of cells 3. Cells come from pre-existing cells

Anton van Leeuwenheok (1632-1723) He invented the first microscope. Dutch scientist who was the first to see bacteria and protists.

Hans and Zacharias Janssen (1595) Dutch lens grinders, father and son produced first compound microscope (2 lenses)

Leeuwenhoek’s Microscope

Robert Hooke (1635-1703) He observed that cork has small regular boxes in it that he called “cells”.

Hooke’s cork cells

Theodor Schwann (animals) Matthais Schleiden (plants) Theodor Schwann and Matthais Schleiden stated that all living things are made of cells. (1839) Theodor Schwann (animals) Matthais Schleiden (plants)

Rudolph Virchow (1821-1902) German scientist who discovered that all cells come from pre-existing cells.

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