Cell Theory Timeline Get out Notebook The Cell

Cell Theory Timeline

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

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.