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Transcript
Chapter 4 – Structure + Function of the Cell 4-1: 4-2: 4-3: 4-4: The History of Cell Biology Introduction to Cells Cell Organelles and Features Unique Features of Plant Cells 4-1: The History of Cell Biology Both living and nonliving things are made up of molecules of C, H, O, + N Organization of molecules separates living from nonliving Cell – smallest unit of matter that can carry on all the processes of life Discovery of the Cell 1665 – Robert Hooke examined a piece of cork and called the “little boxes” CELLS CORK Anton van Leeuwenhoek – identified the first living cell using a microscope Microorganisms – called them animalcules (PROTISTS) Cell Theory Hooke + Leeuwenhoek observations of cells became more realistic 150 year later… 1838 - Matthias Schleiden – concluded that all plants are made up of cells 1839 – Theodor Schwann – concluded that all animals are made up of cells 1855 – Rudolf Virchow – studied diseases and concluded that cells come from other cells The Cell Theory Scientists unified Hooke’s + Leeuwenhoek’s observations into the Cell Theory: All living things are composed of one or more cells Cells are the basic unit of structure + function in an organism Cells come from only the reproduction of existing cells Major Biology Timeline A video. . .