![Page 1: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/1.jpg)
3.1 Cell Theory
KEY CONCEPT Cells are the Basic unit of life.
![Page 2: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/2.jpg)
3.1 Cell Theory
The cell theory grew out of the work of many scientists
and improvements in the microscope.
• Many scientists contributed to the cell theory.
![Page 3: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/3.jpg)
3.1 Cell Theory
The cell theory grew out of the work of many scientists
and improvements in the microscope.
• Many scientists contributed to the cell theory.
• More was learned about cells
as microscopes improved.
![Page 4: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/4.jpg)
3.1 Cell Theory
The cell theory grew out of the work of many scientists
and improvements in the microscope.
• Many scientists contributed to the cell theory.
• More was learned about cells
as microscopes improved.
• The cell theory is a unifying
concept of biology.
![Page 5: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/5.jpg)
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.
![Page 6: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/6.jpg)
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.
![Page 7: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/7.jpg)
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.
![Page 8: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/8.jpg)
3.1 Cell Theory
Prokaryotic cells lack a nucleus and most internal
structures of eukaryotic cells.
• All cells share certain characteristics.
![Page 9: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/9.jpg)
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)
![Page 10: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/10.jpg)
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.
Bacterium
(colored SEM; magnification 8800x)
cell membrane
![Page 11: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/11.jpg)
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
![Page 12: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/12.jpg)
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
![Page 13: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/13.jpg)
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
• Eukaryotic cells have a
nucleus. nucleus
cell membrane
![Page 14: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/14.jpg)
3.1 Cell Theory
There are two cell types: eukaryotic cells and prokaryotic
cells.
• Eukaryotic cells have a
nucleus.
• Prokaryotic cells do
not have membrane-
bound organelles.
nucleus
cell membrane
organelles
![Page 15: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/15.jpg)
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
![Page 16: KEY CONCEPT Cells are the Basic unit of life. 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](https://reader031.vdocuments.net/reader031/viewer/2022022515/5afcfe5a7f8b9aa34d8cd7fb/html5/thumbnails/16.jpg)
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