Contributions to Cell Theory
Jansen: Invented the Compound Microscope
Hooke: Examined cork under the Compound Microscope
Van Leeuwenhoek: Observed unicellular organisms and the theories
Shleiden: Says that all plants are made up of cells
Schwann: Says that all plants are made up of living cells
- ALL LIVING THINGS ARE MADE OF CELLS
- CELLS ARE THE SMALLEST UNIT OF LIFE
- EXISTING CELLS HAVE COME FROM OTHER CELLS
Evidence of Cell Theory
a. All living things are made up of cells.
When they appear under a microscope, they are constantly composed of cells.
-More than one nucleus
-Longer than usual (300mm)
-Surrounded by one plasma membrane, yet has several membrane-bound nuclei
-Very large, many nuclei, continuous cytoplasm
-Cell walls are composed of chitin
-They can carry out all the functions of life
-They are unicellular
b. Cells are the smallest unit of life.
They are the smallest unit of organization that can show all characteristics of living process'. Organelles often require the cooperation of other organelles for successful functioning.