TA Exam III Review2010

TA Exam III Review2010 - Exam I I I Review Dan Roo and...

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Unformatted text preview: Exam I I I Review Dan Roo and Tahir Ahmad Lectures 20-22 i. Fatty Acid Breakdown I ii. Fatty Acid Breakdown I I iii. Fatty Acid Biosynthesis Some I mportant Questions on Fatty Acids I . Why do unsaturated fatty acids have lower melting point? Presence of double bonds that introduces kink The kink will prevent closer and tighter packing of the molecule Hence, molecular interaction with each other will be weakened causing U/S fatty acids to have lower melting point than saturated fatty acid I I . Why do fatty acids usually have even number of carbons? Problem with the product generated: I f the chain was even, then you get more acetyl-CoA relative to odd chains. Only product from even number chains is acetyl-CoA, which serves multiple purposes in the cell. Odd number chains create proprionyl-CoA, which cannot enter -oxidation. Proprionyl-CoA must be metabolized by other mean. I t is converted to succinyl-CoA, which could be used as an intermediate to drive CAC forward....
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This note was uploaded on 11/19/2010 for the course BIO 361 taught by Professor Lake during the Fall '08 term at SUNY Stony Brook.

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TA Exam III Review2010 - Exam I I I Review Dan Roo and...

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