Ch_2_Chemistry_of_Cell

Ch_2_Chemistry_of_Cell - Chemistry of the Cell Biol-003 A....

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Chemistry of the Cell Biol-003 Spring 2010 1 A. Importance of Carbon 1. Carbon = most important atom in biological molecules a. Significance of valence 2. Organic molecules are stable a. Significance of bond energy b. Visible light vs. ultraviolet light 3. Diversity of carbon-containing molecules a. Structures possible b. Functional groups c. Stereoisomers—L vs. D forms 4. Simple hydrocarbon molecules a. Chains b. Bonds c. Ring structures 5. Functional groups a. Positively or negatively charged o Act as acids or bases o Can form bonds b. Polar o Increase solubility in water o Neutral at biological pH values o Functional groups chemically active 6. Stereoisomers a. D vs. L forms b. Asymmetric carbon = carbon with four different substituents bonded to it B. Importance of Water 1. Universal solvent in biological systems 2. Polarity accounts for unique properties a. Hydrogen bonds → cohesiveness o Surface tension o Boiling point o Specific heat o Heat of vaporization b. Temperature-stabilizing capacity
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This note was uploaded on 11/25/2011 for the course BIO 3 taught by Professor Dylan during the Spring '11 term at Evergreen Valley.

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Ch_2_Chemistry_of_Cell - Chemistry of the Cell Biol-003 A....

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