Problem_Set5, bimm 100

Problem_Set5, bimm 100 - BIMM100 Fall 2008 Problem Set 5 1....

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BIMM100 Fall 2008 Problem Set 5 1. The enzymes responsible for adenine synthesis are found in a bacterial operon. a. Name an advantage and disadvantage of having genes clustered in an operon. b. Describe (in ± a sentence) different scenarios in which the adenine operon could be (1) an inducible operon and (2) a repressible operon? Describe one way the repressor could be regulated if it were a repressible operon. c. If it is a repressible operon and the operator region is deleted, how does this affect adenine synthesis and why? 2. What is the relationship between heterochromatin and euchromatin? How does this relate to transcription?
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3. Fill in the blank. binds to a TATA box promoter, causing a bend in the DNA. It is a subunit of the complex. The complex then binds to the DNA, and assists in the positioning of RNA polymerase II. and , which are pre-bound, now bind to the promoter region. The activity of the complex now unwinds the DNA, making it single stranded. Finally, RNA polymerase II initiates transcription, after which the
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This note was uploaded on 01/10/2009 for the course BIMM bimm 100 taught by Professor Dr.sato during the Fall '08 term at UCSD.

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Problem_Set5, bimm 100 - BIMM100 Fall 2008 Problem Set 5 1....

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