bio lecture 2. material composition organisms

bio lecture 2. material composition organisms - Material...

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8/22/2011 1 Material Composition of Organisms Dr. Mark Holbrook Acknowledgements This powerpoint and the last powerpoint were largely the product of Dr. John Menninger a former lecturer in this course . Essential elements - Atoms Chemical bonds o Covalent o Ionic o Van der Waals o Hydrogen Shape of molecules Water o Solvent o Dissociation and pH Material Composition of Organisms
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8/22/2011 2 Metabolic Aspects of Life Atoms that make up living matter are not permanent residents Life is a process with continuous input and output of both matter and energy There is a continuous turnover of matter in your body; you are not a static structure but are in fact dynamic. Hierarchy of Biological Organization Ecosystem Organism Organs Tissues Cells Organelles Molecules Atoms Reductionism Parts Interactions Emergent properties Essential Elements of Life ~25 out of the total 92 are required: o Structure o Function o Replacement and growth Need continuous supply Major
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