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Cellular Structure and Function. Section 1. Cell Discovery and Theory. The Cell Theory. All organisms are composed of one or more cells . The cell is the basic unit of structure and organization of organisms. All cells come from preexisting cells. Cellular Structure and Function. - PowerPoint PPT Presentation
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The Cell Theory
All organisms are composed of one or more cells.
Cell Discovery and Theory
Cellular Structure and Function
The cell is the basic unit of structure and organization of organisms.
Section 1
All cells come from preexisting cells.
Cellular Structure and Function
Light Microscopes
Utilizes a series of glass lenses and visible light to magnify an image
Magnifies images up to 1,000 times the actual size
Cell Discovery and Theory
CMCD/Getty Images
Section 1
Electron Microscopes
Cellular Structure and Function
Utilizes magnets to aim a beam of electrons ata cell to produce an image
Magnifies images up to 500,000 times the actual size
Cell Discovery and Theory
MedicalRF.com/Getty Images
Section 1
Prokaryotic Cell
Simple structure
Cellular Structure and Function
Contains a plasma membrane
Does not contain membrane-bound organelles
Cell Discovery and Theory
Steven P. Lynch
Section 1
Eukaryotic Cell
More complex structure
Cellular Structure and Function
Contains a plasma membrane
Contains membrane-bound organelles
Cell Discovery and Theory
The McGraw-Hill Companies, Inc./Al Telser, photographer
Section 1
Plasma Membrane Thin, flexible boundary between the
cell and its environment
The Plasma Membrane
Cellular Structure and Function
Allows nutrients into the cell Allows waste to leave the cell
Section 1