The History of the Cell Theory
 Anton van Leeuwenhoek (1600s)
 Advanced the microscope and used it to study microscopic
...
The Cell Theory
 All organisms are composed of one or more cells
 The cell is the basic unit of structure and
organizati...
The Compound Light
Microscope
To calculate
magnification…
 Find the magnification of
each lens (objective and
eyepiece)

...
The Electron Microscope

 Uses a beam of electrons
in a vacuum to magnify up
to 500,000x
 2 types
Scanning Electron
Microscope
Transmission Electron
Microscope
2 Basic Cell Types
 All cells contain small specialized structures called
organelles
 Many, but not all, organelles are ...
The Nucleus

 Contains the DNA
 Responsible for cell
division
 Manages and controls
cellular functions
01 the discovery of cells
01 the discovery of cells
01 the discovery of cells
01 the discovery of cells
01 the discovery of cells
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01 the discovery of cells

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01 the discovery of cells

  1. 1. The History of the Cell Theory  Anton van Leeuwenhoek (1600s)  Advanced the microscope and used it to study microscopic organisms  “The father of microbiology”  Robert Hooke (1600s)  Discovered and named „cells‟  Matthias Schleiden (1830s)  All plants are made of cells  Theodor Schwann (1840s)  All animals are made of cells
  2. 2. 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
  3. 3. The Compound Light Microscope To calculate magnification…  Find the magnification of each lens (objective and eyepiece)  Multiply the magnification of each lens ~1500x magnification
  4. 4. The Electron Microscope  Uses a beam of electrons in a vacuum to magnify up to 500,000x  2 types
  5. 5. Scanning Electron Microscope
  6. 6. Transmission Electron Microscope
  7. 7. 2 Basic Cell Types  All cells contain small specialized structures called organelles  Many, but not all, organelles are surrounded by membranes  Organisms with cells that contain membrane bound organelles are called eukaryotes  Organisms without cells that contain membrane bound organelles are called prokaryotes
  8. 8. The Nucleus  Contains the DNA  Responsible for cell division  Manages and controls cellular functions

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