Life - Lecture 1: Part 2 Chapt 2 The Cell Theory All...

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Lecture 1: Part 2 Chapt 2
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The Cell Theory All organisms are composed of one or more cells The cell is the smallest unit that has the properties of life Cells arise only from the growth and division of preexisting cells
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Examples of Cells Fig. 2-4, p. 25 Monera * See cell “Cell Features” animation on Text CD
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Primordial Earth Oparin-Haldane hypothesis Organic molecules that formed building blocks of life could have been formed given conditions that prevailed on primitive Earth Reducing atmosphere that lacked oxygen
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Miller-Urey Experiment Demonstrated that abiotic synthesis of biologically important molecules is possible Organic molecules can be synthesized spontaneously under conditions simulating primordial Earth
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Miller-Urey Apparatus Fig. 2-8, p. 27 * See corresponding animation on text CD.
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Polymers from Monomers Key macromolecules of life, such as proteins and nucleic acids, are polymers that were not formed by the Miller-Urey experiment Instead, it is thought that polymerization reactions could have occurred on solid surfaces
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This note was uploaded on 04/06/2012 for the course BIOL BIOL 1010 taught by Professor Comptonw during the Winter '09 term at York University.

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Life - Lecture 1: Part 2 Chapt 2 The Cell Theory All...

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