Bio 1201 Chapter 4 -

Bio 1201 Chapter 4 - - Chapter 4: Carbon and the Molecular...

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Chapter 4: Carbon and the Molecular Diversity of Life Carbon Chemistry and Isomers 4.1.1 Aside from water, most biologically related molecules contain carbon. Organic chemistry is the study of carbon compounds I. Organic molecules – molecules that contain carbon Exceptions: CO, CO2, and all carbon molecules (diamonds, graphite, and coal) A. Carbon atom is the most versatile building blocks of molecules (fig 4.3) B. Carbon atoms have valence of 4 and can bind to 2, 3, or 4 other atoms B/c of its structure, carbon can form an array of bonds C. Hydrocarbons are molecules that contain only hydrogen and carbon 1. Major composition of fossil fuels 2. Diversity of carbon skeletons 3. Hydrophobic b/c C-C and C-H bond is nonpolar ***Variations in the carbon skeleton can contribute to the diversity of organic molecules (see fig 4.5).
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II. Isomers – 3D structural features A. Isomers – molecules that have same molecular formula but atoms are arranged differently B. Three types of isomers (see fig 4.7): structural isomers, geometric isomers, and enantiomers.
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Bio 1201 Chapter 4 - - Chapter 4: Carbon and the Molecular...

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