PS05 - 6. Specify ALL functions and/or enzymatic activities...

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Problem Set 5 Due Thursday 6 October For the following problems, BRIEF answers are requested; in fact, bullet points are preferred! You may need to use resources other than our textbook (such as the BBC video shown in class and/or the internet) to answer these questions. 1. What is Chargaff’s rule, and what insight did it provide to Watson & Crick? 2. Under what conditions does DNA assume the A, rather than the B form? Which is most likely to be biologically active? 3. What force holds the base pairs together in the middle of the helix? What are the differences between AT and GC pairs with respect to this pairing? 4. What is the backbone of DNA? 5. Define and/or describe the antiparallel nature of double stranded DNA.
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Unformatted text preview: 6. Specify ALL functions and/or enzymatic activities of the following enzymes that participate in DNA replication: gyrase, DNA ligase, polymerase I, and polymerase III. 7. In what direction (5’ to 3’ or 3’ to 5’) does a DNA polymerase move along the DNA template strand? How do organisms solve the problem that all DNA polymerases move in the same direction along the template strand, yet double-stranded DNA is antiparallel? Recommended problems for chapters 6, 10, and 11: 6: MGP (pg 167), insights & solns.1, 3; problems 2, 3, 4, 5, 6, 14, 15, 27, 31 10: 1, 2, 6, 16, 17, 18, 26, 27 11: 1, 3, 6, 10, 16 18, 25...
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This note was uploaded on 12/02/2011 for the course PCB 3063 taught by Professor Marta during the Fall '08 term at University of Florida.

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