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Unformatted text preview: stable inheritance? 10. Describe, in general terms, the enzymes involved in the restriction modification system found in bacteria. Why are both enzymes necessary? 11. What is meant by the “end replication problem”? 12. Name two cell types where you expect to find telomerase enzyme activity. 13. Why is it important for DNA polymerases to have 3’ to 5’ exonuclease activity? 14. What kind of DNA damage does “end-joining” repair? Why is this mechanism error prone? 15. Distinguish between an exonuclease and an endonuclease. 16. What does “relaxed mode of replication” mean? 17. How do bacteria respond to a changing environment? 18. What do sigma factors (ex. σ 70 ) do during transcription initiation in prokaryotes? 19. What is an enhancer? Do enhancers have to be close to the promoter? 20. What does quorum sensing mean? What is an example?...
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This note was uploaded on 01/21/2010 for the course ECON 100A taught by Professor Staff during the Fall '08 term at UCSD.
- Fall '08