bisc300-03mt2finkel

bisc300-03mt2finkel - BISC 300L. Midterm 2. 11/3/03. p. 1...

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BISC 300L. Midterm 2. 11/3/03. p. 1 Your initials________ BISC 300 Introduction to Microbiology MIDTERM 2, Finkel's Section 3 November 2003 Write your name at the top of EVERY PAGE. Pages without names may not receive credit. Question 26 (5 points) _______________ Question 27 (5 points) _______________ Question 28 (15 points) _______________ Question 29 (10 points) _______________ Question 30 (15 points) _______________ Question 31 (5 points) _______________ TOTAL (50 POINTS) _______________
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BISC 300L. Midterm 2. 11/3/03. p. 2 Your initials________ 26) Mutation and repair. (5 points total) The methyl-directed mismatch (MMR) repair process requires three proteins: MutS, MutL, and MutH. Describe how the MMR system determines which DNA strand to repair when it encounters a mismatch? 27) Transcription and its regulation. (5 points) a. Bacterial RNA polymerase holoenzyme consists of 4 “core” proteins ( α 2 ββ ’) and one copy of what additional protein? (2 points) b. How does the transcriptional regulatory activity of this additional protein differ from the way that transcriptional activators or repressors work? (3 points)
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BISC 300L. Midterm 2. 11/3/03. p. 3 Your initials________
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BISC 300L. Midterm 2. 11/3/03.
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This note was uploaded on 05/12/2008 for the course BISC 300L taught by Professor Finkel,susskind during the Spring '02 term at USC.

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bisc300-03mt2finkel - BISC 300L. Midterm 2. 11/3/03. p. 1...

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