Practice MT

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Unformatted text preview: ou exit the room, give your exam paper to an invigilator. • Any student failing to produce and exam paper will be asked to wait until all students have exited. • Do not return to the exam room. All student’s belongings will be in the foyers of the exam rooms and can be retrieved as students exit. (3) Students MUST wait outside the exam room until the disruption has been resolved. (4) Students are RESPONSIBLE for the return of their exam question and answer papers. Any student failing to do so will receive a grade of “0” for the midterm. Students are STRONGLY CAUTIONED to guard against theft of their question paper by other students. NO appeal relating to loss of a question paper by theft will be considered. 3 Question #1 (5 points) The following modified amino acid derivative is called “melatonin.” Melatonin is important in the regulation of circadian rhythms. The neutral, uncharged form of melatonin is shown below. O CH2 CH2 N C CH3 C H 3O H N H (a) Which one of the following groups forms a part of melatonin’s structure? (1) indole (2) imidazole (3) pyrrolidine (4) pyrimidine (5) purine (b) Circle the atoms that serve as H-bond acceptors at pH = 7. Note: this question will be graded “right minus wrong.” O CH2 CH2 N C CH3 C H 3O H N H (c) Circle the groups that ionize in...
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This test prep was uploaded on 04/01/2014 for the course BIOL 201 taught by Professor Chowrira during the Winter '13 term at The University of British Columbia.

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