bmb_526_exam_2a_2004

bmb_526_exam_2a_2004 - BMB 526 Midterm Exam II You may use...

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BMB 526 Midterm Exam II November 30, 2004 You may use this grid to record your answers for comparison with the posted answer keys. The information provided below may be useful in answering some questions. Version of the Exam: 1A 1. 8. 15. 22. 29. 2. 9. 16. 23. 30. 3. 10. 17. 24. 31. 4. 11. 18. 25. 32. 5. 12. 19. 26. 33. 6. 13. 20. 27. 34. 7. 14. 21. 28. 35. n 1 2 3 4 5 binomial (a + b) 1 (a + b) 2 (a + b) 3 (a + b) 4 (a + b) 5 expanded binomial a + b a 2 + 2ab + b 2 a 3 + 3a 2 b + 3ab 2 + b 3 a 4 + 4a 3 b + 6a 2 b 2 + 4ab 3 + b 4 a 5 + 5a 4 b + 10a 3 b 2 + 10a 2 b 3 + 5ab 4 + b 5 ! ! ! The "Wobble" Rules of Codon-Anticodon Pairing 5 Ν Nucleotide of Antico- don 3 Ν Nucleotide of Codon C G A U U A or G G C or U I U, C, or A 3 Ν Nucleotide of Codon 5 Ν Nucleotide of Anticodon G C, U A I, U C I, G U I, G, A Second position First posi- tion Third posit- ion (3 Ν end) U C (5 Ν end) A G Phe Ser Tyr Cys U Phe Leu Leu Ser Ser Ser Tyr Stop Stop Cys Stop Trp C A G U Leu Pro His Arg U Leu Leu Leu Pro Pro Pro His Gln Gln Arg Arg Arg C A G C Ile Thr Asn Ser U Ile Ile Me t Thr Thr Thr Asn Lys Lys Ser Arg Arg C A G A Val Ala Asp Gly U Val Val Val Ala Ala Ala Asp Glu Glu Gly Gly Gly C A G G
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BMB 526 – Midterm Exam II – November 30, 2004 Name (print clearly)_____________________________ C O M C H M ( c i r c l e o n e ) BEFORE you begin the exam, please complete the following information on your response sheet: (a) your name and signature (b) your student number (PID) (c) your college – in the area under SECTION : mark 001 for CHM student m a r k 002 for COM student (d) your version of the exam is 1A — mark this in the area under FORM This exam comprises 35 multiple choice questions. For each question, please mark the letter on the “bubble sheet” that corresponds to the best available answer. When you leave the exam room, please turn in your RESPONSE SHEET and your EXAM to the instructor. Once you exit the exam room, please DO NOT re-enter until the end of the exam period. You have 60 minutes to complete this exam. Do well and good luck.
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1A-3 1. The heat shock genes of E. coli are expressed through the action of an alternative sigma factor. After the bacterial cells are subjected to heat shock, how does this sigma factor direct the expression of this set of genes? A. The alternative sigma factor recruits a minor form of RNA polymerase. B. The alternative sigma factor represses transcription of most other genes. C. The alternative sigma factor binds only to the promoters of heat shock genes. D. The alternative sigma factor initiates translation at different AUG codons. E. The alternative sigma factor acts as a chaperone to refold denatured proteins. 2. What role do “leucine zippers” play in proteins that bind to specific DNA sequences? A. hold two polypeptides together to form a dimeric protein. B. wrap around the DNA in the major groove. C. place one helix in the major groove and one helix across the major groove.
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This note was uploaded on 07/25/2008 for the course BMB 526 taught by Professor Wang during the Fall '06 term at Michigan State University.

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bmb_526_exam_2a_2004 - BMB 526 Midterm Exam II You may use...

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