biochem_answers-1 - Chemistry 2000 Spring 2006 problem...

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Chemistry 2000 Spring 2006 problem solutions: Biochemistry 1. C 4 H 8 O 4 + C 5 H 10 O 5 C 9 H 16 O 8 + H 2 O 2. A lipid is a biochemical compound which is soluble in nonpolar solvents. 3. ( CH 2 ) 10 CH 3 ( CH 2 ) 10 CH 3 ( CH 2 ) 10 CH 3 C O C C O C C O C O O O H H H H H Note that the fatty acid chains were drawn in this alternating arrangement only for conve- nience in drawing the structure. In this kind of crude structural diagram, the orientation doesn’t matter. 4. A biological membrane is largely made up of a phospholipid bilayer. Since a picture is worth a thousand words, here’s mine: outside inside The circles represent the polar head groups of the phospholipids while the squiggly lines rep- resent the nonpolar tails. In addition to the phospholipids, membranes also contain proteins which play specific functional roles. 1
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5. C OH O I’m using the organic chemistry convention that there’s a carbon at every corner with an appropriate number of hydrogen atoms attached. I didn’t specify any particular fatty acid, so
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biochem_answers-1 - Chemistry 2000 Spring 2006 problem...

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