BIOL 084 Chapter Notes - Chapter 5: Glycogen, Nuclear Membrane, Cell Theory
15 Oct 2016
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Anton van leeuwenhoek: invented the first microscope. Robert hooke: developed a microscope that enabled him to study cork tissue; coined the term cell . Matthias schleiden: studied living tissue using microscopes; all plants are made of cells. Theodor schwann: all animals are made of cells. Rudolf virchow: where a cell exists, there must be a pre-existing cell . Cell theory: all living things are composed of cells, cells are the basic unit of all organisms, all cells arise from preexisting cells. Cells are enclosed in a membrane, regulating the passage of materials to and from the cell. Nucleic acid: directs the cell"s activities and controls inheritance. 10-100 micrometers tough external cell walls only have cell membrane; except for plants and protists. Theory of endosymbiosis: eukaryotic cells containing organelles like mitochondria and chloroplasts when free-living prokaryotes began living inside of larger prokaryotes; explains compartmentalization of the cell. Cell"s form is dictated by function but all cells have the same organelles.
