BIOLOGY 1M03 Chapter Notes - Chapter 1: Carl Linnaeus, Speciation, Null Hypothesis
6 May 2013
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Document Summary
Biological science was founded partially with the development of the cell theory and the theory of evolution by natural selection. A phylogenetic tree is a diagram that may be interpreted as a graphical representation of inferred evolutionary relationship[s among species. Phylogenies can be established by analyzing similarities (and differences in traits. Biologists ask questions, generate hypotheses to answer them, and design experiments that test the predictions made by competing hypotheses. Most scientific theories comprise of two components: In the late 1660s, robert hooke and anton van leeuwenhoek were the first scientists to observe cells. Cell: a highly organized compartment bounded by a plasma membrane that contain concentrated chemicals in an aqueous solution. Cell theory: states that all organisms are made of cells and all cells come from preexisting cells. (figure 1. 1) Prediction: something that can be measured and must be correct if a hypothesis is valid. Louis pasteur: demonstrated that cells arise from cells and not by spontaneous generation.
