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Biochemistry Practice Test Questions: Regulation of Gene Expression
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Regulation of gene expression, or gene regulation, includes a wide range of mechanisms that are used by cells to increase or decrease the production of specific gene products.

Topics covered include:  Principles of Gene Regulation, & Regulation of Gene Expression in Prokaryotes.

Biochemistry Practice Test Questions: Regulation of Gene Expression
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25 Questions

1. Lac repressor dissociates from its operator when the repressor binds to ____________
2. Attenuator sequences base-pair to form a stem-and-loop structure rich in ____________
3. Which of the following increases gene expression as much as 200-fold?
4. Which of the following about mRNA stability is not correct?
5. The mechanism by which CBP activates transcription is?
6. Which of the following encodes recombinase?
7. If lactose and glucose are provided in the growth medium of a culture of E. coli ____________
8. Which of the following bacterial operon is not controlled by attenuation?
9. Which of the following is the most appropriate definition of an operator?
10. Lactose utilization by E. coli requires ____________
11. RNAi stands for ____________
12. Where does a repressor bind an operon?
13. Which of the following takes place when tryptophan levels are high?
14. Which of the following is not required for the expression of genes in the lactose operon?
15. Which of the following takes place when tryptophan levels are low?
16. Formation of the attenuator stem-and-loop structure depends on the events that occur during translation of ____________
17. To which class of transcription factor do nuclear receptors belong?
18. Which of the following regulatory sequence allows transcription to continue?
19. Which of the following are the structural motifs that mediate protein-protein interactions?
20. CAP is ____________
21. Trp repressor is a ____________
22. The lactose repressor is encoded by ____________
23. Whose interaction with Lex-A facilitates the repressor’s self-cleavage reaction?
24. Which of the following is not an example of housekeeping genes?
25. Which of the following statements regarding the regulation of trp operon expression by attenuation is correct?

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