BIOL 118 Lecture Notes - Lecture 1: Antonie Van Leeuwenhoek, Rudolf Virchow, Robert Hooke
19 Jan 2017
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Chapter 1: biology and the tree of life. Differs from everyday use of the word which may mean a guess or speculation. Robert hooke first to look at cells. Were the first to observe cells are all organisms made of cells: by the 1800s observed enough specimens, cell. Bound by a thin plasma membrane a highly organized compartment and contains concentrated chemicals in a water solution: cell theory all organisms are made of cells all cells come from preexisting cells. Where do cells come from? spontaneous generation. Bacteria in spoiled food just appeared: cells come from preexisting cells suggested by rudolph virchow, each of these were a hypothesis a proposed explanation that can be tested scientists then designed experiments to test these hypotheses. Proof that cells come from other cells: louis pasteur. Devised an elegant experiment to test both hypotheses see figure 1. 2 in chapter 1. Will help with the lab: pages 45-47. Understanding models: pages 49-54 chemical structures.
