BIOL130 Lecture Notes - Lecture 1: Dark Field Microscopy, Antonie Van Leeuwenhoek, Golgi Apparatus
1 Aug 2016
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Robert hooke (1635-1703: first microscope (built a compact version, viewed slices of cork looked at the remains of cell walls when the living part was gone, cellula (little rooms that monks lived in) cells . Progress stalled for a century or so limited resolving power, emphasis on description rather than explanation. 1830s compound microscope: improved magnification and resolution, allowed visualization of objects less than 1 m. 1833 robert brown (botanist: noticed that every plant cell contained a round structure ( kernel . 1838 matthias schleiden (botanist: discovered that all plant tissues are composed of cells, embryonic plant always arose from a single cell. 1839 theodor schwann (zoologist: similar observations in animal cells recognition of structural similarities between plants and animals, formulated the cell theory. All organisms consist of one or more cells. The cell is the basic unit of structure, life and reproduction for all organisms. Added 20 years late: all cells arise only from pre-existing cells.
