The Cell Theory

• Cell


  The basic unit of life.
• Unicellular Organisms


  Living things thar are made up of one cell.
• Unicellular Organisms


  Are microscopic, which means they are so small that you cannot see them with unaided eye.
• Multicellular organisms 


  It is made up of many cells.
• Multicellular Organisms

  Are macroscopic, means they can be seen by unaided eye.
• Plants and Animals

  Multicellular organisms
• Protozoa and Bacteria

  Unicellular Organisms
• All living things are composed of one or more cell.
• The cell is the basic unit of life.
• All cells arise from pre-existing cells.
• Microscope


  Use to view objects that cannot be seen by unaided eye.
• It can magnify the size of a very small objects.

  Microscope
• Zacharias Janssen


  1595, he invented the first compound microscope.
• Robert Hooke


  1665, examined a thin slice of cork under the microscope he built.
• Robert Hooke


  He named the small compartments "cellula" because they reminded him of the "little rooms" in the monastery.
• Robert Brown

  He coined the word cell.
• Matthias Jakob Schleiden 


  An English Botanist who discovered the nucleus in plants.
• Anton Van Leeuwenhoek


  He created a microscope with a much higher magnification than the microscope that Hooke used.
• Anton Van Leeuwenhoek 


  Father of Microbiology and Microscopy
• Anton Van Leeuwenhoek


  1674, he was the first to see and describe bacteria, yeasts plants, the teeming of life in a drop of water, and the circulation of blood corpuscles in capillaries.
• Matthias Jakob Schleiden 


  Botanist, observe the tissues of plants contained cells.
• Theodor Schwann


  Discovered that an animals were composed of cells.
• Rudolf Ludwig Karl Virchow


  Omnis cellula e cellula, all cells arise from pre-existing cells.