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3.1 Cell Theory
KEY CONCEPT Cells are the Basic unit of life.
3.1 Cell Theory
The cell theory grew out of the work of many scientists
and improvements in the microscope.
First to
ident...
3.1 Cell Theory
• More was learned about cells
as microscopes improved.
• The cell theory is a unifying
concept of biology...
3.1 Cell Theory
Early studies led to the development of the cell theory.
• The Cell theory has three principles.
– All org...
3.1 Cell Theory
Early studies led to the development of the cell theory.
• The Cell theory has three principles.
– All org...
3.1 Cell Theory
Early studies led to the development of the cell theory.
• The Cell theory has three principles.
– All org...
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal
structures of eukaryotic cells.
• All cells share certa...
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal
structures of eukaryotic cells.
• All cells share certa...
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal
structures of eukaryotic cells.
• All cells share certa...
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal
structures of eukaryotic cells.
• All cells share certa...
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
• Eukaryotic cells have a
nucleus.
nucle...
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
• Eukaryotic cells have a
nucleus.
• Euk...
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
• Prokaryotic cells do not
have a nucleu...
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
• Prokaryotic cells do not
have a nucleu...
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Cellular Theory Introduction

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Transcript of "Cellular Theory Introduction"

  1. 1. 3.1 Cell Theory KEY CONCEPT Cells are the Basic unit of life.
  2. 2. 3.1 Cell Theory The cell theory grew out of the work of many scientists and improvements in the microscope. First to identify cells and name them. Looked at cork. Made more powerful microscopes an first to describe living cells. All three of these scientists contributed to the cell theory.
  3. 3. 3.1 Cell Theory • More was learned about cells as microscopes improved. • The cell theory is a unifying concept of biology. Leeuwenhoek’s drawings of microscopic animalcules.
  4. 4. 3.1 Cell Theory Early studies led to the development of the cell theory. • The Cell theory has three principles. – All organisms are made of cells.
  5. 5. 3.1 Cell Theory 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.
  6. 6. 3.1 Cell Theory 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.
  7. 7. 3.1 Cell Theory Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. • All cells share certain characteristics.
  8. 8. 3.1 Cell Theory Prokaryotic cells lack a nucleus and most internal structures of eukaryotic cells. • All cells share certain characteristics. – Cells tend to be microscopic. Bacterium (colored SEM; magnification 8800x)
  9. 9. 3.1 Cell Theory 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. – cytoplasm Bacterium (colored SEM; magnification 8800x) cell membrane
  10. 10. 3.1 Cell Theory 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. Bacterium (colored SEM; magnification 8800x) cell membrane cytoplasm
  11. 11. 3.1 Cell Theory There are two cell types: eukaryotic cells and prokaryotic cells.
  12. 12. 3.1 Cell Theory There are two cell types: eukaryotic cells and prokaryotic cells. • Eukaryotic cells have a nucleus. nucleus cell membrane
  13. 13. 3.1 Cell Theory There are two cell types: eukaryotic cells and prokaryotic cells. • Eukaryotic cells have a nucleus. • Eukaryotic cells have membrane-bound organelles. nucleus cell membrane organelles
  14. 14. 3.1 Cell Theory There are two cell types: eukaryotic cells and prokaryotic cells. • Prokaryotic cells do not have a nucleus. nucleus cell membrane organelles
  15. 15. 3.1 Cell Theory 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. nucleus cell membrane organelles cytoplasm
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