Midterm 3 - 2007A - KEEP THIS CLOSED ON YOUR DESK UNTIL THE...

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1 KEEP THIS CLOSED ON YOUR DESK UNTIL THE START OF THE TEST NO NOTES or BOOKS PERMITTED BCH 2333B Midterm ANSWERS ARE ON THE END - THIS IS VERSION A OF THE MIDTERM Professor: Mezl A Wednesday March 28 21 QUESTIONS - 50 MINUTES Materials needed: One computer answer sheet This exam Faculty of Science approved calculators are permitted. Two carbon models are permitted: THEY MUST BE DISASSEMBLED AT THE START OF THE TEST INSTRUCTIONS Pick the BEST answer for each multiple choice question AT THE END - Verify that your name and student number are on the answer sheet . Hand in just the computer answer sheet. Keep the exam: a corrected exam will be posted at the web site
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2 1. Adenine has a chiral atom at position: A) 1', 2', 3' 4' and 5' B) 1 and 3 C) 4 and 5 D) 9 E) It does not have a chiral atom 2. This question identifies the version of the test that you are writing. Put a A as the answer to this question 3. The bond that makes the branches in starch : A) α -1, β -2 B) α -1,5 C) α -1,6 D) β -1,4 E) β -1,6 4. You break cellulose down into its subunits and you then chemically reduce the C=O in each subunit to the alcohol level. A) All the product will be D-sorbitol B) Half of the product will be D-sorbitol and half L-sorbitol C) Half of the product will be D-sorbitol and half a sugar that you did not have to memorize D) Half of the product will be L-sorbitol and half a sugar that you did not have to memorize E) All the product will be L-sorbitol 5. When discussing nucleotides, syn and anti refer to: A) the configuration of the anomeric carbon B) rotation around the bond that links the sugar with the base C) lactim-lactam interconversions D) the partial charge on the base E) which atom of the base is linked to the sugar
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This test prep was uploaded on 04/22/2008 for the course SCIENCE BCH2333 taught by Professor Mezl during the Winter '08 term at University of Ottawa.

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Midterm 3 - 2007A - KEEP THIS CLOSED ON YOUR DESK UNTIL THE...

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