THE CELL: INTRODUCTION

Robert Hooke

he derived one of the earliest microscopes that can magnify every sort of material, with his most commemorative work coming from a thin slice of cork from the bark of an oak tree

Cellulae (porous structures)

Latin for "small room", coined by Hooke

1666

the year when Hooke became the first to be credited with seeing a cell

Antonie van Leeuwenhoek

the first to study magnified cells and was the first to observe living cells, devise his own microscope to study biological specimens, and invent a simple microscope with only one lens

Leeuwenhoek's studies

specimens such as blood, semen, feces, pepper, tartar, etc.

Matthias Jacob Schleiden

a German botanist who focused his interests on the study of plant cells and concluded that all plants are made up of cells

Theodor Schwann

a German physiologist who examined animal cells in 1839, and concluded that all animals are made up of cells and helped establish the cell theory

Rudolf Virchow

a German physician who proposed a third tenet in the cell theory stating that all cells come from other cells through the process of cell division

1st point in the cell theory

all organisms are composed of one or more cells

2nd point in the cell theory

cells are the smallest and basic units of structure and function in organisms

3rd point in the cell theory

cells arise only from previously existing cells

Prokaryotic and eukaryotic cells

2 types of cell