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Cards In This Set
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What role did Hans & Zacharias Janssen play in cell development?
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In the 1590's they placed one lens behind another in a tube (simple compund magnifying lens)
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What is Robert Hooke best know for?
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He is responsible for naming cells. He called them cells like monks' rooms (or cells) in a monastery
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__________ used a microscope to examine a thin slice of cork (dead plant cells)
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Robert Hooke (1665)
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Who is considered the "Father of Microbiology?"
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Anton Van Leeuwenhoek (1673)
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What is Anton Van Leeuwenhoek well know for?
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He was the first to view organisms (living things) in a drop of pond water. He named them "animalcules" (now known to be protists and bacteria)
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Who used a simple handheld microscope he made himself to view pond water & scrapings from his teeth?
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Anton Van Leeuwenhoek
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What is Robert Brown known for?
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In 1833 he described the "blob" he observed in cells and named it the nucleus
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What is Matthias Schleiden known for?
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In 1838 he concluded that all plants were made of cells.
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What is Theodore Schwann known for?
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In 1839 he concluded that all animals were made of cells.
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What is known Rudolph Virchow for?
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In 1855 he observed, under a microscope, cells dividing. He then reasoned that all cells come from other pre-exsisting cells by cell division.
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What does the cell theory say?
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1.) All living things are made of Cells.
2.) Cells are the basic unit of structure and function in an organism (basic unit of life)
3.) Cells come from the reproduction of exsisting cells. (cell division)
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Which three men directly helped to develop the cell theory?
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Matthias Schleiden, Theodore Schwann, and Rudolph Virchow
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Tell me about the electron microscope!
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-it uses a beam of electrons to illuminate images
-it allowed scientists to verify the components of the cell theory
-it can magnify up to 2,000,000x! (light microscopes, by contrast, only 2,000x!)
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Cytoplasm is...
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The fluid inside a cell
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The nucleus is...
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The control center of a cell
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