Major Points, Lecture 17 SS10

Major Points, - 19 Explain why both repressible and inducible operons are examples of negative control of transcription 18 Compare positive to

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BSCI105, Freshman Connection Fall 2010 Major Points, Lecture 17 (Chapter 18) 1. List and define three levels of prokaryotic gene regulation. 2. What is the most common and efficient level of gene regulation? 3. What kind of pathways are commonly regulated in prokaryotes? 4. Contrast the mode of action of negative and positive regulatory mechanisms? 5. What is an operon? 6. Are operons found in prokaryotes, eukaryotes, or both? 7. What is a repressible operon? 8. What is an inducible operon? 10. Describe the structure of an operon. 11. What is one example of a repressible operon? 12. Is the repressor in a repressible operon normally active or inactive? 13. What is the function of a co-repressor in a repressible operon? 14. What happens to mRNA transcription by a repressible operon in the presence of a co- repressor? 15. What is one example of an inducible operon?
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
16. Is the repressor in an inducible operon normally active or inactive? 17. What is the function of an inducer in an inducible operon? 18. What happens to mRNA transcription by an inducible operon in the presence of an inducer?
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 19. Explain why both repressible and inducible operons are examples of negative control of transcription. 18. Compare positive to negative control mechanisms of transcription. 19. What is the effect of abundant glucose on regulation of the lac operon? 20. In the example of the lac operon, how does low glucose effect the CAP protein? 21. Why is CAP considered an example of positive regulation? 22. What are five levels of control in eukaryotic gene expression? 23. What is a constitutive gene? 24. Define three types of regulatory DNA contributing to positive transcriptional control in eukaryotes. 25. What is a transcription factor? 26. Define basal transcription factors, including their function an where they act. 28. What are to types of regulatory DNA used by specific transcription factors? 29. What is an enhancer? 30. What is special about gene regulation by enhancers?...
View Full Document

This note was uploaded on 12/08/2011 for the course BSCI 105 taught by Professor Jensen during the Summer '07 term at Maryland.

Page1 / 2

Major Points, - 19 Explain why both repressible and inducible operons are examples of negative control of transcription 18 Compare positive to

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online