3. Genetics

Gene Expression — Quiz

Test your understanding of gene expression with 5 practice questions.

Practice Questions

Question 1

Which of the following regulatory elements in eukaryotes is primarily responsible for increasing the rate of transcription of a gene, often by binding to specific transcription factors at a distance from the promoter?

Question 2

In eukaryotic cells, a specific protein is observed to have a very short half-life, meaning it is rapidly degraded after synthesis. This rapid degradation is an example of gene expression regulation at which level?

Question 3

A mutation in a eukaryotic gene results in the loss of the poly-A tail from the mRNA transcript. What is the most likely consequence of this mutation on gene expression?

Question 4

Which of the following statements accurately describes a key difference in the regulation of gene expression between prokaryotes and eukaryotes?

Question 5

Consider a bacterial operon responsible for synthesizing an essential amino acid. If this amino acid is abundant in the environment, what is the most likely regulatory outcome for the operon?