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The Discovery of the Cell. Dutch lens grinder Produced the first compound microscope (2 lenses). Around the same time as Hooke. Dutch fabric merchant and amateur scientist Looked at blood, rainwater, scrapings from teeth through a simple microscope (1 lens)

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Presentation Transcript
slide2

Dutch lens grinder

  • Produced the first compound microscope (2 lenses)
slide3

Around the same time as Hooke

  • Dutch fabric merchant and amateur scientist
  • Looked at blood, rainwater, scrapings from teeth through a simple microscope (1 lens)
  • Observed living cells, called some ‘animalcules’
  • Some of the small ‘animalcules’ are now called bacteria
slide4

English scientist

  • Looked at a thin slice of cork (oak cork) through a compound microscope

Robert Hooke (1665)

  • Observed tiny, hollow, room-like structures
  • Called these structures ‘cells’ because they reminded him of the rooms that monks lived in
  • Only saw the outer walls (cell walls) because cork cells are not alive
the men of the cell theory
The men of the Cell Theory
  • German botanist
  • Viewed plant parts under a microscope
  • Discovered that plant parts are made of cells

Matthias Schleiden (1838)

the men of the cell theory6
The men of the Cell Theory
  • German zoologist
  • Viewed animal parts under a microscope
  • Discovered that animal parts are made of cells

Theodor Schwann (1839)

just one more
Just one more…
  • German physician
  • Stated that all living cells com only from other living cells

Rudolf Virchow (1855)

the cell theory
The Cell Theory
  • All living things are composed of cells
  • Cells are the basic units of structure and function in living things
  • New cells are produced from existing cells
prokaryotes vs eukaryotes
DO not contain a nuclei

Smaller and less complicated than eukaryotes

Carry out EVERY activity associated with living things

GRRSNERT

Example: BACTERIA

Unicellular

Contain a nuclei in which genetic material is separated from rest of cell

Larger and more complex than prokaryotes

Great variety

Plants

Animals

Fungi

Protists

Unicellular or Mulitcellular

Prokaryotes vs. Eukaryotes
prokaryotic cells
Prokaryotic Cells
  • Some use flagellum for locomotion
    • threadlike structures protruding from cell surface

Bacterial cell wall

Rotary

motor

Sheath

Flagellum