Biol223_Smith_03_2003-2004Fall_Final

Biol223_Smith_03_2003-2004Fall_Final - Biol223_Smith FINAL...

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Unformatted text preview: Biol223_Smith FINAL EXAM 23 January 2004 PAGE 1 of 8 Exam # Biology 223, sections 5 & 6 (Smith) Fall 2003 FINAL EXAM 23 JANUARY 2004, 8:00-11:00 am 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 Biol223_Smith FINAL EXAM 23 January 2004 PAGE 2 of 8 Exam # Question 1 for 10 points ( CHAPTER 1) During mitosis and meiosis, human cells start with 46 chromosomes (23 pairs). What is the maximum number of chromosomes during each process and what is the number at the completion for each process? Question 2 for 10 points ( CHAPTER 2) Predict the base-paired hairpin structure adopted in dilute solution (assume only one molecule) by an oligonucleotide of this sequence 5’GGAGTCCGTTTTCGGACTCCAG- 3’. Sorry, but I was too lazy to draw all the structures to test you on recognition. Question 3 for 5 points ( CHAPTER 3) The single strand of DNA below was annealed to two RNA primers. Draw a line representing the product expected from the addition of E. coli DNA polymerase III and dNTPs in suitable buffer (Mg++, etc). 5’-AGCGTCCTATACCTGAACGACTCGAGGTATCTTCCAAGATATACAAGGCTA-3’ UGGACUUGCU UGGUUCUAUAU Biol223_Smith FINAL EXAM 23 January 2004 PAGE 3 of 8 Exam # Question 4 for 10 points ( CHAPTER 4) In a haploid fungal strain, compounds G, H, and I are essential for growth and are hypothesized to be synthesized by the following pathway involving 8 enzymes. The experiment first mutagenizes the wild type prototroph and then screens for mutants that do not grow on minimal medium, but will grow when supplemented with a single nutrient. Predict which type of mutants would be expected if the hypothesized pathway is correct by marking a + for growth in the singly-supplemented medium, or a 0 for no growth....
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This note was uploaded on 02/23/2010 for the course BIOL 223 taught by Professor Smithanddarwiche during the Spring '10 term at American University of Beirut.

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Biol223_Smith_03_2003-2004Fall_Final - Biol223_Smith FINAL...

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