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Introduction to the Cell. Discovery of the Cell. 1665 Robert Hooke saw the cell walls of cork – called them cells. I673 Anton van Leeuwenhoek saw the first living cells in a drop of water – “little animals”. 3 important discoveries that lead to the cell theory. - PowerPoint PPT Presentation
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Introduction
to the
Cell
Discovery of the Cell1665 Robert Hooke saw
the cell walls of cork – called them cells
I673 Anton van Leeuwenhoek saw the first living cells in a drop of water – “little animals”
3 important discoveries that lead to the cell theory.
1838 Matthias Schlediden concluded all plants were composed of cells
3 important discoveries that lead to the cell theory.
1839 Theodor Schwann concluded all animals were composed of cells1838 Matthias Schlediden concluded all plants were composed of cells
3 important discoveries that lead to the cell theory.
1838 Matthias Schleiden concluded all plants were composed of cells1839 Theodor Schwann concluded all animals were composed of cells1855 Rudolf Virchow observed cell division.
The Cell TheoryAll living things are composed of cells
The Cell TheoryAll living things are composed of cellsCells are the basic units of structure and function in an organism
The Cell TheoryAll living things are composed of cellsCells are the basic units of structure and function in an organismCells come only from the reproduction of existing cells
Cell Diversity – not all cells are alike
They vary depending on their function
Cells contain a variety of internal structures called organelles.
Organelle –a cell component that performs specific functions for the cell
The 2 main types of cells:
1. Prokaryotes – cells without a nucleus or membrane-bound organelles
Bacteria cells
2. Eukaryotes – cells that have a nucleus and membrane bound organelles.
Quick Quiz
• Who were the three scientists to develop the cell theory?
• What are the three parts of the cell theory?• What are the two main types of cells?
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