BIOL 225 Study Guide - Midterm Guide: Lazzaro Spallanzani, Francesco Redi, Louis Pasteur

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Readings: 1-5 history of cell biology, 99-101 viruses and prions, 11-14 important- information on scientific method that will not be covered in the lecture but will be expected to know. What is a cell: a cell is the vehicle for hereditary information that defines the species. The specimen sat on the end of a pin head: a modern microscope is a microscope with a light source, a compoiund microscope has multiple lenses within. The cell doctrine (proposed in 1839 by schleiden and schwann: all life forms are composed of one or more cells, cells are the basic unit of structure for al organisms, all cells arise from pre-existing cells. The last one was added in 1855 by virchow. Spontaneous generation: theory of spontaneous generation is living material can spontaneously arise from non-living material, francesco redi experiments show that maggots cant spontaneously arise from meat, microorganisms spoil the meat, john needham boiled mutton.