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

• Ribosome

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 transcriptional level?

• By regulating the amount of protein produced

• By regulating the amount or activity of mRNA

• By modifying the DNA sequence

• By altering the cell membrane

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 increase transcription rates

• To break down mRNA transcripts

• To mediate binding of RNA polymerase

Which type of protein binds to enhancer sites to increase the rate of transcription?

• Repressor proteins

• Activator proteins

• Basal factors

• 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 becomes inactive

• RNA polymerase is inhibited

• Nucleases degrade mRNA

What is the function of basal factors in transcription?

• To prevent activity

• To promote activity

• To mediate binding

• To degrade mRNA