Chapter 19
Biology: How Life Works · 8 exercises
Problem 1
Distinguish between gene expression and gene regulation.
3 step solution
Problem 2
Explain what is meant by different "levels" of gene regulation and give some examples.
5 step solution
Problem 3
Give two examples of how DNA bases and chromatin can be modified to regulate gene expression, and explain
3 step solution
Problem 5
Explain how one protein-coding gene can code for more than one polypeptide chain.
5 step solution
Problem 6
Name and describe three ways in which gene expression can be influenced after mRNA is processed and leaves the nucleus.
3 step solution
Problem 7
Diagram the lactose operon in \(E\). coli with the proper order of the elements lacI, lacO, lacY, and lacz, and explain
4 step solution
Problem 8
Describe the role of the CRP-CAMP complex in positive regulation of the lactose operon in \(E\). coli.
5 step solution
Problem 9
Describe what is meant by lysis and lysogeny, and explain how gene regulation controls these two pathways.
5 step solution