practice_final_exam_1 - _ Name CHM 3218 / CHM 5305 Summer...

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__________________________________ Name 1 CHM 3218 / CHM 5305 Summer 2011 Practice Final Examination – Part 1 University of Florida Honor Code Statement: "On my honor, I have neither given nor received unauthorized aid in doing this assignment." __________________________________ Student signature Instructions : You would have 75 minutes to complete this section of the exam. All books, notes and other aids would be prohibited, but calculators and molecular models would be allowed (no sharing of calculators or molecular models, however). Be sure to budget your time and answer questions briefly but completely. To receive partial credit for incorrect answers, be sure to show your work, particularly in problems involving calculations. Write your name on each page. 1. One biosynthetic route to lysine is shown on the following page. The reactions in this pathway illustrate many of the concepts discussed during the course. ( Total 50 points ). a. Is the chiral center in L-lysine ( R ) or ( S )? Both chiral centers in diaminopimelate isomer #1 have the same absolute configuration ( R or S ) as the single chiral center in L-lysine. Use this information to draw diaminopimelate isomer #1 in its correct Fischer projection form. ( 3 points ). b. Where a box appears above an arrow, predict the cofactor most likely to participate in the enzymatic reaction, if any. If no cofactor is predicted to be involved, write “None” in the box. Note that the names and structures of all cofactors discussed during lectures can be found on the final page of this exam. ( 3 points each ).
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This note was uploaded on 09/18/2011 for the course CHM 3218 taught by Professor Stewart during the Spring '08 term at University of Florida.

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practice_final_exam_1 - _ Name CHM 3218 / CHM 5305 Summer...

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