Biol223_Smith_06_2003-2004Spring_Final

Biol223_Smith_06_2003-2004Spring_Final - Biol 223S04_Smith...

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Biol 223S04_Smith FINAL EXAM 03 June 2004 PAGE 1 of 9 Exam # Biology 223 Spring 04 sections 4, 5, 6 (Smith) FINAL EXAM 03 JUNE 2004, 3:00-5:00 pm EXAM COPY # No notes, no calculators, no phones. Write your name and student ID number at the top of this page. Use non-erasable ink, write on the back if needed. Write legibly and succinctly, you will be graded on the quality of your communication, and that includes expressing ideas clearly using proper terminology. Show your work and justify your conclusions, partial credit is given, but likewise, do not ramble. Negative points may be assigned to frivolous and grossly incorrect answers. 3 sections, 100 points possible each section. Note points per question and spend your effort accordingly! codon chart Second base
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Biol 223S04_Smith FINAL EXAM 03 June 2004 PAGE 2 of 9 Exam # Section I Question 1 for 15 points In a prototrophic strain of neurospora crassa , intermediate A is made from components of minimal medium by enzyme 1. Consider the following hypothesis, where compounds D and G are essential, but compound F is toxic. Predict the phenotypes that might be expected to result from deletions of single genes 1-8, by indicating growth (+) or no growth (0) when minimal medium is supplemented by the addition of a single compound. single supplement to minimal medium A B C D E F G wild type mutant 1 mutant 2 mutant 3 mutant 4 mutant 5 mutant 6 mutant 7 mutant 8 A B C D F E G 1 2 3 4 5 6 7 8
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Biol 223S04_Smith FINAL EXAM 03 June 2004 PAGE 3 of 9 Exam # Question 2 for 15 points Some of the compounds below are expected to be formed when standard, unmodified nucleic acids are hydrolyzed. Label those compounds with a D, R, or both (DR), to indicate whether they come from DNA, RNA, or both, respectively. Also indicate by circling the heavy atom (hydrogen is not a heavy atom) on the standard bases where the ribose or deoxyribose is attached. N N NH N NH 2 N NH NH 2 O N NH NH N NH 2 O NH N H O O NH NH NH N O O N NH NH N O N N NH N N N NH N NH 2 NH 2 NH NH O NH 2 N H N N N H O NH N O NH 2 NH N N H 2 NH 2 N NH NH NH 2 N NH NH N O CH 3 N NH N H O O N N H O N H 2 CH 3
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Biol 223S04_Smith FINAL EXAM 03 June 2004 PAGE 4 of 9 Exam # Question 3 for 10 points
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Biol223_Smith_06_2003-2004Spring_Final - Biol 223S04_Smith...

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