CHEM153A_final_S09

CHEM153A_final_S09 - Chemistry and Biochemistry 153A Spring...

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Page 1 of 10 Chemistry and Biochemistry 153A Spring 2009 Final Exam, ID: A “The Pregnancy Test” Instructions: s You will have 3 hours to complete this exam. s You may use a pencil (recommended) or blue or black ink pen to write your answers. Other color inks will not be graded. s Only answers on the answer sheet, in the indicated space, will be graded; writing anywhere else will be ignored. Be sure to write your name on the answer sheet. s Do not write in the score boxes on your answer sheet; you will be docked points if you do. s For answers with a word or sentence limit, words beyond this limit will not be read or graded. s For short- or multi-answer questions, including irrelevant or wrong information or selections in your answer will cause you to lose points. s Write legibly. If the grader cannot read your answer, you won’t get credit. s Items you may have on your desk: - non-programmable scientific calculator, without its case or cover - writing utensil(s) - student ID ALL other items must be placed into a bag, which must be zipped up or closed and pushed completely under your chair. s No hats, hoods or earphones allowed. (Head scarves are fine.) s If you continue to write after ‘time’ is called, your exam will be taken and docked 10 points.
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Chem 153A, Spring 2009, Final Exam Answer Sheet 1 (YELLOW) Page 2 of 10 ( pts) Part I – Metabolism (100 pts) – Answer Sheet 1 (Yellow) 1. (18 pts) True or False? a. Dr. Nelson in pregnant. b. Reactions used in both catabolic and anabolic pathways are called ‘anapleurotic.’ c. NADH shuttle systems bring NADH into the mitochondrial matrix. d. Succinyl-CoA is hydrolysed to succinate and CoA in the reaction catalyzed by succinyl-CoA synthetase. e. The reaction catalyzed by fumarase always produces the same isomer of malate because fumarate is prochiral. f. FADH 2 formed in the TCA cycle diffuses to Complex II (of the electron transport chain) to drop off its electrons. 2. (1 pt) Write your exam ID (A) in the blank at the upper right of Answer Sheet 1. 3. (20 pts) For each cofactor below (a-g), list all matching descriptors (A-L). (The number of answers you should list is given in parentheses.) Each descriptor may be used more than once, and there may be extra (unused) descriptors. Cofactors a. NAD (5) b. FMN (3) c. Iron-sulfur cluster (1) d. Coenzyme A (3) e. Coenzyme Q (2) f. Lipoic acid (3) g. Biotin (3) Descriptors A) Can accept/carry a single electron B) Can accept/carry two electrons C) Carries (binds) an acyl group D) Carries (binds) a carboxyl group E) Is used by pyruvate carboxylase F) Is used by pyruvate decarboxylase G) Is used by pyruvate dehydrogenase complex H) Is used by succinate dehydrogenase I) Is used by malate dehydrogenase J) Is more likely found in its reduced form K) Is more likely found in its oxidized form L) Is derived from an essential vitamin 39
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Chem 153A, Spring 2009, Final Exam Answer Sheet 1 (YELLOW) Page 3 of 10 ( pts) 4. (5 pts) Which of the following statements are true? There may be more than one
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This note was uploaded on 03/02/2010 for the course CHEM CHEM153A taught by Professor Nelson during the Winter '10 term at UCLA.

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CHEM153A_final_S09 - Chemistry and Biochemistry 153A Spring...

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