Gene Expression and Regulation Quiz

What is the process by which information encoded within genes is used to create proteins?

• Gene regulation

• Gene expression

• Gene mutation

• Gene replication

Which of the following is NOT a product of gene expression?

• Genome

• Transcriptome

• Proteome

• Chromosome

What is the totality of genetic information in a cell, tissue, or organism called?

• Transcriptome

• Proteome

• Genome

• Epigenome

How can gene expression levels be controlled at the translational level?

• By regulating the amount of mRNA

• By regulating the amount of protein produced

• By modifying histones

• By changing DNA sequences

What allows the phenotype of organisms to change while the genotype remains the same?

• Gene mutation

• Gene replication

• Gene regulation

• Gene deletion

What is the role of nucleases in translational control?

• To bind to enhancer sites

• To form single nucleotides from mRNA

• To increase transcription rates

• To bind to promoter regions

Which type of protein binds to enhancer sites to increase transcription rates?

• Repressor proteins

• Basal factors

• Activator proteins

• Nucleases

What is an example of an extracellular signal that controls transcription factor activity?

• Inducer molecule

• Nuclease

• Hormone

• Repressor protein

What happens when lactose binds to a repressor protein?

• Transcription of lactose metabolism genes is suppressed

• The repressor protein is activated

• Lactose metabolism occurs

• Transcription rates decrease

What is the function of basal factors in transcription?

• To prevent activity

• To promote activity

• To mediate binding

• To degrade mRNA