Cell Theory Timeline.

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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:

Cell Theory Timeline

Get out Notebook Name The Cell Theory Date Period 1. 2. 3. Cell Scientists 1. 2. 3. 4. 5. 6. 7. 8.

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. Living cells only come from other living cells.

Taking Notes In order to complete your timeline… Take notes of the following scientists Zacharias and Hans Jansen Aristotle Robert Hooke Anton van Leeuwenhoek Matthias Schleiden Theodor Schwann William Henry Perkin Rudolph Virchow Write down their name, date, and a brief description of what they did.

Aristotle 334 B.C.E. Aristotle observed nature directly. He classified all known organisms as either plants or animals. B.C.E.= Before Common Era

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.

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

Theodor Schwann 1839 Theodor Schwann states “all animals are made of cells.”

William Henry Perkin 1856 William Henry Perkin develops an intense purple dye, which is used to stain slides.

Rudolph Virchow 1858 Rudolph Virchow states… “Cells are the last link in a great chain that forms tissues, organs, systems, and individuals. Where a cell exists, there must have been a preexisting cell.” Cells can only arise from pre-existing cells

Create a Cell Timeline Label the timeline with the dates, scientist names, and details of the important discoveries. The earliest date should be on the left and the most recent on the right. Show a reasonable amount of elapsed time between dates. 8 events & 8 pictures Graded on neatness, accuracy, and use of color. List Cell Theory and the 3 parts of the Cell Theory.