BLG 143 Chapter Notes - Chapter 1: Archaea, Selective Breeding, Robert Hooke
29 Dec 2017
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Document Summary
Organism- a living thing made up of cells. The cell theory states: all organisms are made up of cells, all cells come from pre-existing cells. Cell- highly organized structure that is surrounded by a thin plasma membrane and contains concentrated chemicals in an aqueous solution. Spontaneous generation hypothesis- an old hypothesis that stated that cells are brought to life spontaneously. Robert hooke: first to see/discover cells, used a microscope with 30x magnification, examined cork from a tree. Anton van leeuwenhoek: made the first observation of human blood cells and sperm cells. The theory of evolution by natural selection- species change through time because species with heritable traits produce more offspring than another species: theory was proposed by darwin and wallace. Two important claims in theory: species are related by common ancestry, characteristics of a specie can be modified over time. Evolution- the change in characteristics of a population over time.
