-
Hooke
Hooke was the first to discover cells.
Hooke used an early compound microscope to look at a nonliving slice of cork. Hooke notice that the cork was made up of tiny chambers. Hooke called the chamber "cells". -
Leeuwenhoek
Leeuwenhoek was the first to observe bacteria.
Leeuwenhoek used a single-lens microscope to observe pond water and other things. His observation was that tiny living organisms seemed to be everywhere, He found living organisms in the human mouth and he named the bacteria.
Leeuwenhoek improved the cell theory by saying that cells are living organisms. -
Dutrochet
Dutrochet said that cells are the fundamental element of organization.
Dutrochet used microscopes to make his observation on the cell theory.
Dutrochet improved the cell theory by saying cells are the fundamental element of organization. -
Dujardin
Dujardin recognized the existence of single-celled organisms.
Dujardin used microscopes to make his observation on single-celled organisms.
Dujardin improved the cell theory by adding single-celled organisms to the theory. -
Schleiden
Schleiden said that all plants are made of cells.
Schleiden used microscopes to observe plants. His observations was that plants were made up of cells.
Schleiden improved the cell theory by saying that all plants are made up of cells. -
Schwann
Schwann said all animals are made of cells.
Schwann pulled other existing observation to make his own theory that stated that all animals are made of cells.
Schwann improved the theory by saying that like plants, animals are made up of cells. -
Virchow
Virchow said that new cells can be produced only from the division of existing cells.
Virchow added to the all ready existing cell theorys.
Virchow improved the cell theory saying cells can reproduce from all ready existing cells.
