Regulation of Gene Expression

Which of the following best describes the transcriptional ground state in eukaryotes, as compared to bacteria?

In the regulation of the lac operon in E. coli, what molecule serves as the actual inducer that binds to the Lac repressor, leading to its dissociation from the operator?

What is the primary function of the cAMP receptor protein (CRP) in the regulation of the lac operon?

In the context of the trp operon's attenuation mechanism, what is the role of the leader peptide?

What is the primary molecular signal that triggers the SOS response in E. coli?

How is the synthesis of ribosomal proteins (r-proteins) coordinated with rRNA synthesis in bacteria?

What is the function of a riboswitch in regulating gene expression?

In the Salmonella phase variation system, what is the direct molecular outcome of the Hin recombinase activity?

What is the role of the SWI/SNF enzyme complex in eukaryotic gene regulation?

How do steroid hormones typically regulate gene expression?

What is the function of the protein Drosha in the context of gene silencing?

In the development of a Drosophila embryo, what is the primary role of the maternal gene product Bicoid?

What type of stem cells are found in the morula stage of human development and are characterized by the ability to differentiate into any tissue, including a complete organism?

A researcher creates a chimeric protein by fusing the proline-rich activation domain of CTF1 to the DNA-binding domain of Sp1. What is the expected activity of this chimeric protein?

In the yeast galactose metabolism regulatory circuit, what is the role of the Gal80p protein in the absence of galactose?

What is the typical number of genes found in an E. coli operon?

The consensus sequence for promoters that regulate the expression of E. coli heat shock genes is recognized by which sigma factor?

What is the primary role of histone acetyltransferases (HATs) in activating chromatin for transcription?