Exam 16: Regulation of Gene Expression

In a particular bacterial cell, β-galactosidase is at high concentrations but -galactoside permease is at very low concentrations.Which is the most likely explanation?

Which gene is most likely regulated at the posttranscriptional level?

Diagram a gene in both a prokaryotic cell and a eukaryotic cell.Include the types of sequences that are important for transcriptional regulation, the location of those sequences, and the proteins that bind these regions.

With regard to the lac operon, high cyclic AMP concentrations most likely signify that

In eukaryotic cells, a positive regulator or enhancer

Refer to the figure showing an experiment on female honey bees. Which hypothesis was this experiment designed to test?

The TATA box is a(n)

Refer to the figure showing the potential points for the regulation of gene expression. Which point would be considered epigenetic control?

Which is an anti-HIV treatment that works by preventing the formation of provirus?

How do negative regulation and positive regulation in bacteria differ?

Which gene would you most likely suspect is not regulated at the posttranscriptional level?

Which enzyme has been targeted in anticancer drug development?

Refer to the figure showing positive and negative regulation. Which protein is a repressor? Which protein is an activator?

Which statement about TFIID is false?

The stress response elements in plants are

Regions of the genome with lots of CpG islands tend to be

The most efficient means of regulating protein synthesis is by selective

A particular protein binds to a small molecule present in a microbe's environment.This protein then no longer binds to DNA.This is a case of a(n) _______ system.

Refer to the figure showing the pathways of microRNAs and siRNAs. What is structure B and what is it composed of?

TATA boxes are