P2_F06 - BioBM 330 2nd Prelim 31 October, 2006 Name _...

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BioBM 330 Name ____________________________ 2nd Prelim Cornell ID#________________________ 31 October, 2006 Please do not lift this sheet until the signal is given! Please be certain that your exam contains a total of 12 pages! Please write your name on EACH page. We urge you not to get bogged down on any one question. If you do not see the point fairly quickly, go on to the other questions and come back if time permits. You may have two hours for the whole exam. 1. _________ (15) 10. _________ (13) 2. _________ (10) 11. _________ (9) 3. _________ (6) 12. _________ (6) 4. _________ (20) 13. _________ (4) 5. _________ (4) 14. _________ (3) 6. _________ (4) 15. _________ (6) 7. _________ (4) 16. _________ (3) 8. _________ (8) 17. _________ (8) 9. _________ (5) 18. _________ (8) Total _________________ (136) First Position (5' end) Second Position Third Position (3' end) U C A G Phe U U C C A A G G U C A G U C A G U C A G Phe Leu Leu Leu Leu Leu Leu Ile Met Ile Ile Val Val Val Val Ser Ser Ser Ser Pro Pro Pro Pro Thr Thr Thr Thr Ala Ala Ala Ala Tyr Stop Tyr Stop His Gln Gln His Asn Lys Asn Lys Asp Glu Asp Glu Cys Stop Trp Cys Arg Arg Arg Arg Ser Ser Arg Arg Gly Gly Gly Gly
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BioBM330 2nd prelim 10/31/06 Name: ___________________________2 1. 5' 3' A G A A T T T T A G G G C C C 5' 3' C T A A T T T A A G G G C C C a. (1 point) Name the enzyme that could catalyze the repair of the break in the top strand. b. (1 point) On the diagram above circle one bond that could be cleaved by initial attack of a 3’ to 5’ exonuclease. (4 points) Name two enzymes from prokaryotes that have this capability. 1) 2) (4 points) Name and describe the function of such 3’ to 5’ exonucleases in DNA replication. c. (1 point) On the diagram above, place a square around one bond that could be cleaved by initial attack of a 5’ to 3’ exonuclease. (4 points) List two roles of the 5’ to 3’ exonuclease activity.
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BioBM330 2nd prelim 10/31/06 Name: ___________________________3 2. a. (2 points) Name and briefly describe the fundamental organizational unit of chromatin. b. (4 points) Name and/or briefly describe the two higher order organizational structures in chromatin. c.
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This homework help was uploaded on 04/06/2008 for the course BIOBM 3300 taught by Professor Blankenshi during the Fall '08 term at Cornell University (Engineering School).

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P2_F06 - BioBM 330 2nd Prelim 31 October, 2006 Name _...

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