Chapter 19B Homework Questions

1. Describe the role of activators and repressors in eukaryotic transcription regulation?

2. What is meant by combinatorial regulation of gene expression?

3. What is meant by coordinated control of gene expression?

4. Describe RNA splicing. What is meant by alternative RNA splicing?

5. Once mRNA reaches the cytoplasm what are four methods by which the cell can regulate the amount of protein produced by such RNA’s?

6. What are oncogenes?

7. What is a common difference between cancer cells and normal cells?

8. Describe the multistep model of Cancer development.

9. Is there a genetic element to cancer? Explain.

10. What are transposable elements? Who by and how were they discovered?

11. What is repetitive DNA? What is thought to be its function?

12. What is it that makes eukaryotic DNA different than prokaryotic DNA?

13. Describe three ways in which errors in cellular processes can lead to DNA duplication?