Reference no: EM133199645

Study guide, chapter 19

1. Indicate the 7 steps at which gene expression can be regulated.
2. Indicate the two classes of regulatory proteins and relate them to positive and negative regulation of gene expression. 
3. How are regulatory sites (sequences) at distant DNA locations capable of regulating a promoter for transcription initiation? How do you prevent cross activation of promoters?
4. How are the terms inducible and repressible used to describe how effectors act?
5. What is an operon?
6. Why do most regulatory proteins interact with DNA at the major groove?
7. How can combinatory regulation reduce the overall number of regulatory proteins required for expression regulation?
8. Briefly describe each of the protein motifs used by regulatory proteins for DNA interaction.
9. Give an example of how signal integration is used in gene expression regulation. 
10.  Indicate the difference between constitutive and regulated genes.