Biol223_Smith_19_2006-2007Fall_ExamI

Biol223_Smith_19_2006-2007Fall_ExamI -...

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BIOL223_Smith_2006-2007Fall_ExamI 03 November 2006 PAGE 1 of 4 Biology 223 Spring 2006-2007 Exam I 03 November 2006 EXAM COPY # No notes, no calculators, no phones. Write your name and student ID number at the top of this page. I prefer ink. Write your answer where indicated if possible, write on the back if needed. Write legibly and succinctly, using proper terminology. If I cannot read or understand your answer, you may receive no credit. Show your work and justify your conclusions, partial credit may be awarded. State any important assumptions and indicate ambiguity. Negative points may be assigned to unjustified, frivolous, and grossly incorrect answers. 100 points possible Russell 2nd edition, chapters 1-7 Note points per question and spend your effort accordingly! codon chart Second base
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BIOL223_Smith_2006-2007Fall_ExamI 03 November 2006 PAGE 2 of 4 Question 1 for 15 points (2 minutes) Examine the structures of the two bases and the sugar. a) name them by full name, or just by letter if that is all you know. b) indicate precisely which lone pairs and hydrogens form hydrogen bonds with a complementary base in B- form DNA or A-form RNA, by drawing the lone pairs as pairs of dots in the correct orientation, and circling the hydrogens. c) indicate the which heavy atom by which each base is connected to deoxyribsose or ribose by circling it. d) Indicate on the ribose, the 5’ hydroxyl.
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Biol223_Smith_19_2006-2007Fall_ExamI -...

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