In class notes for September 5, 2007

In class notes for September 5, 2007 - Introduction to...

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Introduction to Biological Sciences 110a In class notes for September 5, 2007 Last class of Macromolecules is the class of Lipids o Heterogenous group o Lipids are in membranes o Most macromolecules are hydrophilic Lipids are NEVER hydrophilic The are either hydrophobic or amphipathic Amphipathic means partly hydrophobic and partly hydrophilic o All lipids we will use in biology are amphipathic o Derived from fatty acids, alcohol, and a variety of other molecules o Lipids are extremely diverse Especially structurally o Functions of lipids Energy storage Fats Oils o Used for back up energy They are very efficent Humans use glycogen reserves, then fats are used Structure To cells in membranes o About ½ of membranes are lipids Back to proteins (in detail) o Made from amino acids o Typical molecule as a few hundred in them. Some are 10, tytin has 10,000 o There are 20 amino acids used in making proteins Contains 5 parts
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Introduction to Biological Sciences 110a In class notes for September 5, 2007 Alpha carbon (the one in the center) (every thing else is attached to it) Amine group (pK about 7) carries a positive charge Carboxylate group (pK of about 4) carries negative charge at pH 7 Side chain (R in slide) Hydrogen atom If 4 groups are attached to the alpha carbon, there are two options for structure
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This note was uploaded on 02/22/2009 for the course BSCI 110A taught by Professor Broadie/patton during the Fall '08 term at Vanderbilt.

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In class notes for September 5, 2007 - Introduction to...

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