Download THE CELL THEORY

THE CELL THEORY
DEVELOPMENT OF THE CELL
THEORY
Zacharis Janssen
 1590
 Developed the first crude compound
microscope.
ANTON VAN LEUWENHOEK
 Mid 1600’s
 First to view and describe “microbes”.
 Microbes are living things.
Leeuwenhoek’s Microscope
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ROBERT HOOKE
 1665
 Used the word “cells” to describe
 spaces he observed in cork.
MATTHIAS SCHLEIDEN
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1838
Worked with plants
Determined that plants contained cells
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The cells were alive
Plants are made up of living cells
THEODOR SCHWANN
 1838
 Worked with animals
 Determined that animals were made
up of cells
RUDOLPH VIRCHOW
 Observed that cells come from other
cells.
THE CELL THEORY
 All organisms are made up of one or
more cells.
 Cells are the basic unit of structure
and function in all living things.
 All cells arise (come from) cells that
already exist.
Exceptions to cell theory
 The origin of the first cell.
 Viruses : not made up of cells but
Contain genetic material
Can “reproduce” using a host cell