Download
1 / 17
170 likes | 186 Views
Explore the fascinating history and principles of the cell theory, from Robert Hooke to modern microbiology, distinguishing between prokaryotic and eukaryotic cells. Understand the significance of cells as the basic unit of life.
E N D
The cell theory grew out of the work of many scientists and improvements in the microscope. • Many scientists contributed to the cell theory.
Robert Hooke • Born: July 18, 1635 • Birthplace: Freshwater, Isle of Wight, England • Died: March 3, 1703 • Philosopher who was instrumental in the Scientific Revolution • Known as the “Father of Microscopy” for his work in the development of the microscope • Coined the term “cell” when looking at plant (cork) cells because they looked like monks’ rooms in a monastary
Anton van Leeuwenhoek • Born: October 24, 1632 • Birthplace: Delft, Netherlands • Died: August 30, 1723 • "Father of Microbiology." best known for his contribution to the improvement of the microscope • First to observe and describe single celled organisms that he first referred to as animalcules, and which we now refer to as microorganisms
The cell theory grew out of the work of many scientists and improvements in the microscope. • More was learned about cells as microscopes improved. • The cell theory is a unifying concept of biology. • The Cell Theory was developed by Schleiden & Schwann. • Virchow is known as the “Father of Pathology” for his work on disease and social medicine. Animalcules as seen by Leeuwenhoek
Early studies led to the development of the cell theory. • The Cell theory has three principles. • All organisms are made of cells.
Early studies led to the development of the cell theory. • The Cell theory has three principles. • All organisms are made of cells. • All existing cells are produced by other living cells.
Early studies led to the development of the cell theory. • The Cell theory has three principles. • All organisms are made of cells. • All existing cells are produced by other living cells. • The cell is the most basic unit of life.
Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. • All cells share certain characteristics.
Bacterium (colored SEM; magnification 8800x) • Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. • All cells share certain characteristics. • Cells tend to be microscopic.
cell membrane Bacterium (colored SEM; magnification 8800x) • Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. • All cells share certain characteristics. • Cells tend to be microscopic. • All cells are enclosed by a membrane.
cell membrane cytoplasm Bacterium (colored SEM; magnification 8800x) • Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. • All cells share certain characteristics. • Cells tend to be microscopic. • All cells are enclosed by a membrane. • All cells are filled with cytoplasm.
There are two cell types: eukaryotic cells and prokaryotic cells.
nucleus cell membrane • There are two cell types: eukaryotic cells and prokaryotic cells. • Eukaryotic cells have a nucleus.
nucleus organelles cell membrane • There are two cell types: eukaryotic cells and prokaryotic cells. • Eukaryotic cells have a nucleus. • Prokaryotic cells do not have membrane- bound organelles.
nucleus organelles cell membrane • There are two cell types: eukaryotic cells and prokaryotic cells. • Prokaryotic cells do not have a nucleus.
nucleus organelles cell membrane cytoplasm • There are two cell types: eukaryotic cells and prokaryotic cells. • Prokaryotic cells do not have a nucleus. • Prokaryotic cells do not have membrane-bound organelles.
