Podcast
Questions and Answers
Which of the following is required for lac repressor to be made?
Which of the following is required for lac repressor to be made?
- Functional promoter and lacI gene
- Functional operator and lacZ coding region
- Functional promoter and lacZ coding region
- Functional promoter, lacZ coding region, and operator (correct)
What happens to the lacZ gene expression when there is no functional promoter?
What happens to the lacZ gene expression when there is no functional promoter?
- It decreases (correct)
- It increases
- It remains the same
- It is not affected
Which of the following is true about the lac operator and lac repressor?
Which of the following is true about the lac operator and lac repressor?
- They both bind to the promoter
- They are required for lactase production
- They both regulate the expression of beta-galactosidase (correct)
- They are mutations in the lac operon
What is the function of regulatory proteins in the lac operon?
What is the function of regulatory proteins in the lac operon?
What is the term for a situation where multiple proteins are encoded on a single mRNA molecule?
What is the term for a situation where multiple proteins are encoded on a single mRNA molecule?
Which level of gene regulation is most common in prokaryotes?
Which level of gene regulation is most common in prokaryotes?
In eukaryotes, how is gene expression regulated?
In eukaryotes, how is gene expression regulated?
What is the default state of gene expression in prokaryotes?
What is the default state of gene expression in prokaryotes?
How do regulatory proteins in prokaryotes and eukaryotes differ in complexity?
How do regulatory proteins in prokaryotes and eukaryotes differ in complexity?
What is the function of repressors in gene regulation?
What is the function of repressors in gene regulation?
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