History of the Cell Theory

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History of the Cell Theory
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Robert Hooke

• 1665
• Observed cork (dead cells of oak bark) using a
  compound light microscope
• He named what he saw cells because the
  box-shaped structures reminded him of the small
  rooms that housed monks

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Anton von Leeuwenhoek

• Late 1600s
• Saw microscopic animals he called animalcules
• In pond water, milk, plaque from teeth

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Mattias Schleiden

• 1838 Concluded that all plants are made up of
  cells

Onion root
Elodea Cells
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Theodor Schwann

• 1839 - Concluded that all animals are made up of
  cells

Human nerve cells
Skeletal muscle cells
Human blood cells
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Cell Theory

• 3 parts
• Cells are the basic unit of structure and
  function of living things
• Structure building blocks
• Function job

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Cell Theory

• 3 parts
• 2. All living things are made of one or more
  cells
• One cell unicellular, like bacteria
• Many cell multicellular, like plants and animals

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Cell Theory

• 3 parts
• 2. All cells come from other cells
• Cells can reproduce to make more cells

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2 Types of Cells

• Prokaryote
• Simpler
• Fewer parts
• Pro means NO nucleus
• - All bacteria are prokaryotes

E.coli
S. aureus
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2 Types of Cells

• 2) Eukaryote
• More complex
• More parts called organelles
• HAVE a nucleus
• Plants, animals, fungi, protists are eukaryotic