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Questions and Answers
Who coined the term 'cell' or 'cellulae' after observing the honeycomb-like structures of cork?
Who discovered tiny organisms (protozoa and bacteria) in pond water and called them 'animalcules'?
Which scientist is considered the 'father of Microscopy'?
Who discovered the 'nucleus' inside the cell and termed it as such?
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Which scientist proposed the theory 'omnis cellula e cellula', meaning 'every cell stems from another cell'?
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What can be characterized by changes in the anatomical structure of the cell?
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Study Notes
Microscope Development
- Zacharias Janssen invented the compound microscope, consisting of objective and eyepiece lenses.
- Anton Van Leeuwenhoek improved the design of the existing compound microscope.
Cell Discovery
- Robert Hooke observed honeycomb-like structures in cork, leading to the term "cell" or "cellulae".
- Anton Van Leeuwenhoek discovered tiny organisms (protozoa and bacteria) in pond water and called them "animalcules" in 1676.
- Robert Brown discovered that all plant specimens are composed of cells and found a dark, dense spot inside the cell, which he termed "nucleus".
- Matthias Schleiden discovered that plants are made up of cells.
- Theodor Schwaan observed animal cells.
Cell Theory
- Rudolf Virchow proposed that cells come from pre-existing cells with his theory "omnis cellula e cellula", meaning "every cell stems from another cell".
- According to Virchow's theory, entities that can cause disease can be characterized by changes in the anatomical structure of the cell.
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Description
Test your knowledge about the history of microscopes and the contributions of Zacharias Janssen, Robert Hooke, and Anton Van Leeuwenhoek. Learn about the inventions and discoveries that shaped the field of microscopy.
