Gene Regulation Overview

Which molecule acts as a regulatory protein to inhibit gene expression?

Which molecule promotes the repression of gene expression by combining with a repressor?

What is the function of an inducer in gene regulation?

What would be the consequence of deactivating a regulatory gene in a repressible operon?

Which of the following best describes a situation where the lac operon is likely to be transcribed?

What is the role of cAMP in bacterial gene regulation?

Which of the following repressions occurs when an operator is blocked by a repressor?

What effect does a corepressor have on a repressor and the associated operon?

What is a potential effect of decreased chromatin condensation in eukaryotic gene expression?

Which method is uniquely employed by eukaryotes for gene expression regulation?

What is the primary function of RNA interference in eukaryotic cells?

Which type of DNA is found in the noncoding regions of the human genome?

What role does piRNA play during gamete formation?

Which statement accurately characterizes siRNA?

What effect does regulatory protein binding to promoter sequences have in eukaryotic gene expression?

Which characteristic distinguishes eukaryotic gene regulation from bacterial regulation?

What is the primary method to determine the amount of mRNA generated from a gene?

Which method would be the most effective in analyzing alternative splicing of a gene?

What is a common mechanism for coordinating the expression of multiple, related genes in eukaryotic cells?

DNA methylation and histone acetylation are examples of which type of biochemical processes?

Which role is typically associated with general transcription factors in eukaryotic cells?

Which of the following does NOT contribute to the regulation of eukaryotic gene expression?

What is the main consequence of alternative splicing in gene expression?

Which of the following describes a common outcome of histone acetylation on gene activity?

What is the role of tryptophan in the functioning of the repressor in bacteria?

How does an increase in intracellular cAMP influence the transcription of the lac operon?

What is the effect of glucose on the lac operon?

What happens to the cAMP receptor protein (CRP) as extracellular glucose levels rise?

In what way does the binding of the cAMP receptor protein (CRP) promote the lac operon transcription?

What is the consequence of a yeast mutant with histones resistant to acetylation?

Which statement best describes the relationship between lactose and the lac operon?

What would be the expected outcome if RNA polymerase cannot open the DNA strands at the lac operon?

Which characteristic accurately describes tumor-suppressor genes?

What function do the normal products of BRCA1 and BRCA2 serve?

What effect do mutant forms of Ras protein typically have in tumors?

Which type of cancer is primarily associated with mutations in the APC gene?

What role do tumor-suppressor genes generally perform in cell regulation?

What is the primary outcome of deregulated Ras protein activity?

In what capacity do tumor-suppressor genes interact with proto-oncogenes?

What is a significant characteristic of cancer that results from genetic changes in cell cycle control?

What is the role of the MyoD protein in cellular differentiation?

Which statement best describes cytoplasmic determinants?

Why does the introduction of MyoD into neurons fail to produce muscle cells?

What type of gene expression is primarily influenced by the bicoid gene in Drosophila?

What distinguishes cytoplasmic determinants from other types of regulatory molecules in embryos?

How does MyoD influence gene expression in fat cells compared to neurons?

What characterizes the differentiated state of cells?

Which of the following options correctly explains the role of MyoD in muscle differentiation?