Midterm II Fall 08 - Answer Key

Midterm II Fall 08 - Answer Key - BIS101-01, Fall 2008 Dr....

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BIS101-01, Fall 2008 Dr. D. J. Kliebenstein, Instructor Midterm Exam II Please print your name and ID number on page 2 and the rest of the exam. Do not print your ID number on the first page. The exam has 10 questions and a total of 120 points For full credit, show all of your work. AUTHORIZATION FOR PUBLIC DISTRIBUTION OF GRADED PAPERS OR EXAMINATIONS I,_________________________________, Authorize the University to publicly distribute my graded exam (e.g., handed out in class or left in an exam bin) for BIS101-01. If I do not sign, then I must see the instructor to pick up my exam. Signed:_______________________________________ Dated:__________________________________
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1 __________ 2 __________ 3 __________ 4 __________ 5 __________ 6 __________ 7 __________ 8 __________ 9 __________ 10 __________ Total _________
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1. (18 points) Complete the following Table, assuming that the DNA is written with the top left being a 5’ end and that the columns represent transcriptional and translational alignments. Further, reading is from left to right. For DNA, use ACTG or N where N represents any possible nucleotide. A T G C C N A G T G C A DNA Double Helix T A C G G N T C A C G T A U G C C N A G U G C A mRNA U A C G G N U C A C G U tRNA Anticodon MET PRO SER ALA Amino Acids Which of the above rows is the template strand? The second DNA strand is the template strand. The bottom table is typically thought of as describing the tRNA’s, are there any codons that do not correspond to tRNA’s? If so, what are they and what do they do? The UAA, UAG and UGA codons do not represent tRNA’s and they cause translation to stop.
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2. A researcher studying two organisms decides to measure their DNA content by analyzing the percentage of the various bases. The results are shown below. What do they indicate about the DNA structure in each organism. (4 pts) Organism 1 – A 13.2 C 36.8 G 36.8 T 13.2 This organism likely contains the “Watson/crick” double stranded B DNA molecule Organism 2 – A 13.2 C 36.8 G 16.8 T 33.2 This organism probably utilizes single-stranded DNA for its genetic material 3. (16 points) In lecture, we went over a number of sequences and pieces of information required to generate a functional prokaryotic gene. Use the line below as a DNA element and diagram a prokaryotic gene including all information necessary to make a functional protein. State if each element functions as DNA, RNA or Protein?
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This note was uploaded on 10/21/2009 for the course BIS 52192 taught by Professor Enochbaldwin during the Fall '09 term at UC Davis.

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Midterm II Fall 08 - Answer Key - BIS101-01, Fall 2008 Dr....

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