Cell Theory
Timeline

• Dot point 1(i): outline the historical development of the cell theory, in particular the contributions of Robert Hooke and
Robert Brown
• Dot point 1(iii) discuss the significance of technological advances to the developments of the cell theory
• Skills: Use a variety of pictorial representations to show relationships clearly and succintly

Get out Notebook Paper
The Cell Theory
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Cell Scientists
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Name
Date

Cell Theory
1. All living things are made of cells.
2. Cells are the basic units of structure and function in living things.
(structure = form; function = purpose) 3. All cells come from pre-existing cells.

Taking Notes
• In order to complete your timeline…
– Take notes on the following scientists
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Zacharias and Hans Jansen
Robert Hooke
Anton van Leeuwenhoek
Robert Brown
Matthias Schleiden
Theodor Schwann
William Henry Perkin
Rudolph Virchow

– Write down their name, date, and a brief description of what they did.

It all started with…
• The first microscope! – Zacharias and Hans
Jansen
– 1595
– Middleburg, Holland
– Placed two lenses in a tube Hans & Zacharias Janssen
• 1595
• Hans & Zacharias Janssen produced the first compound microscope by lining up 2 lenses.

Robert Hooke
• 1665
• Robert Hooke observed lining matter
(cork cells) through a compound microscope, which reveals empty cells.
• He is the first to call the spaces in the cork “cells” which means little rooms.

Anton van Leeuwenhoek
• 1675
• Anton van Leeuwenhoek observed living cells through a simple microscope. Called the miscroorganisms he saw “animacules”

Matthias Schleiden
• 1838
• Matthias Schleiden discovered that plants were made of cells.

Theodor