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The Discovery of Cells: Pioneers in Cell Theory

This chapter explores the groundbreaking discoveries of early scientists in the field of cellular biology. Robert Hooke first described cells in cork, naming them based on their box-like structures. Anton van Leeuwenhoek observed single-celled organisms in water, naming them "animalcules," now known as protists. Matthias Schleiden and Theodor Schwann contributed to the formulation of the cell theory, asserting that all plants and animals are made of cells, while Rudolf Virchow emphasized that all cells arise from existing cells. Together, these discoveries laid the foundation for modern cell theory.

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The Discovery of Cells: Pioneers in Cell Theory

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  1. Chapter 3 – Section 1 The Discovery of Cells

  2. Robert Hooke • 1st to describe cells • Looked at cork and named the boxes cells • Saw “juice” in cells – these were living cells

  3. Anton van Leeuwenhoek • Observed small organisms in the water. He named these organisms animalcules. • Today, we call these single-celled organisms protists (PROH tists). • First person to see bacteria.

  4. Matthias Schleiden • He studied plants and concluded that all plant parts were made of cells

  5. Theodor Schwann • Concluded that all animal tissues were made of cells • Wrote the first two parts of the cell theory.

  6. Rudolf Virchow A doctor that stated that all cells could form only from other cells Responsible for the 3rd part of the Cell Theory All cells come from existing cells

  7. The Cell Theory • All organisms are made of one or more cells • The cell is the basic unit of all living things • All cells come from existing cells

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