THE CELL THEORY

Robert Hooke

in 1665, he used a microscope to examine a thin slice of cork (dead plant cell)

Anton van Leeuwenhoek

In 1673, (a dutch microscope maker), was first to view organism (living things).

Robert Hooke

what he saw looked like small boxes

Anton van Leeuwenhoek

he used a simple, handheld microscope to view pond water and scrapings from his teeth.

Robert Hooke

is responsible for naming cell

Matthias Schleiden

in 1838, a German botanist concluded that all plants were made of cells.

Robert Hooke

he called them “cells” because they looked like the small rooms that monks lived in called cells.

Matthias Schleiden, Theodore Schwann

both co founded the cell theory

Theodore Schwann

in 1839, a German zoologist concluded that all animals were made of cells.

Rudolf Virchow

in 1855, a German medical doctor observed under the microscope, cells dividing.

Rudolf Virchow

he reasoned that all cells come from other pre-existing cells by cell division.

cell theory

all living organisms are composed of cells. They may be unicellular or multicellular.

modern cell theory

energy flow occurs within cells.

cell theory

the cell is the basic unit of life.

modern cell theory

heredity information (DNA) is passed on from cell to cell.

cell theory

cells arise from pre-existing cells. (They are not derived from spontaneous generation.)

modern cell theory

all cells have the same basic chemical composition.