506_507_quiz_8

506_507_quiz_8 - into the citric acid cycle? Answer: (1)...

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Name _____________________________ UIN ___________________ Biochemistry 411 Quiz 8 1.) (a) ( 1 Point ) What enzyme is used to convert fatty acid cis double bonds into trans double bonds so that the fatty acid can undergo _-oxidation? Answer:_ 3 , _ 2 – enoyl CoA isomerase (b) ( 2 Points ) Draw the substrate and product for this enzyme Answer _ 3 -cis fatty acid converted to _ 2 – trans fatty acid R C C H 2 C C SCoA O H H R H 2 C C C C SCoA O H H Δ 3 , Δ 2 enoyl CoA isomerase Δ 3 - cis fatty acid Δ 2 trans fatty acid 2.) ( 3 Points ) _-oxidation of odd numbered fatty acids produces the 3C-unit propionyl CoA. What three enzymes are used to convert propionyl CoS to succinyl Co so that it can enter
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Unformatted text preview: into the citric acid cycle? Answer: (1) propionyl CoA carboxylase (2) methyl malonyl CoA epimerase (3) methyl malonyl CoA mutase 3.) (a) ( 1 Point) When does the body produce ketone bodies? Answer: under conditions of starvation and untreated diabetes (b) ( 1 Point) What is the body's purpose for producing ketone bodies? Answer: to be used by tissues, such as the brain, in place of glucose 4.) ( 2 Points ) Write the overall reaction for the fatty acid synthase. Answer: 8 acetyl CoA + 7ATP + 14 NADPH _ palmitate + 7 ADP + 7 Pi + 14 NADP +...
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This note was uploaded on 03/27/2010 for the course BICH 441 taught by Professor Staff during the Spring '08 term at Texas A&M.

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