BIOLOGY 1M03 Chapter Notes - Chapter 1: Cell Theory, Spontaneous Generation, Selective Breeding
17 Dec 2015
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Evolution has been ongoing for 3. 6 billion years. Phylogenetic trees show the ancestral relationships of all living families of mammals. Many organisms share five characteristics: made from one or more membrane bound units called cells. 2. they store and process information that is heritable (dna) they replicate. 3. they evolve (organisms are the product of evolution, and they continue to evolve) 5. they use energy (plants absorb light and animals digest food) Key concepts: cell theory, theory of evolution and process of natural selection. * these concepts are unified by the ideas of ancestry and decent. Highly organized compartment bounded by a plasma membrane that contains concentrated chemicals in aqueous solution. All cells originated from a progenitor cell the zygote (also derived from other cells egg and sperm) Louis pasteur designed an experiment to test whether cells would arise spontaneously or from other cells. Had two flasks, each filled with a nutrient broth.
