The Cell Theory

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Where did these three ideas come from?

(1)All living things are made of cells.

(2)Cells are the basic units of structure and function in living

things (in other words, a cell is the basic unit of life).

(3) All cells come from other cells.

Robert Hooke

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1900

1675

- English Scientist- Identified 1st cells (1663)

Anton van Leeuwenhoek

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- Dutch Businessman- Identified 1st living cells (1674)

1st cells (1663)

Matthias Schleiden

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1900

1675

- German Scientist-Observed all plants are made of cells (1838)

1st cells (1663)

1st living cells (1674)

Theodor Schwann

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1900

1675

- German Scientist-Observed all animals are made of cells (1839)

1st cells (1663)

1st living cells (1674)Plants made of cells (1838)

Rudolf Virchow

1600

1750

1825

1900

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- German Scientist-Observed all cells come from other cells (1855)

1st cells (1663)

1st living cells (1674)

Plants made of cells (1838)

Animals made of cells (1839)

The Cell Theory Explained

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The important scientific discoveries of these five scientists contributed to the development of “The Cell Theory”.

1st cells (1663)

1st living cells (1674)

Plants made of cells (1838)

Animals made of cells (1839)

All cells come from cells (1855)

The Cell Theory Review

1600

1750

1825

1900

1675

(1)All living things are made of cells.

(2)Cells are the basic units of structure and function in living

things (in other words, a cell is the basic unit of life).

(3) All cells come from other cells.

1st cells (1663)

1st living cells (1674)

Plants made of cells (1838)

Animals made of cells (1839)

All cells come from cells (1855)