Gene Regulation and Operon Quiz

What is the purpose of gene regulation?

• To determine which genes will be turned on and off

• To increase the rate of transcription

• To decrease the rate of translation

• To produce more DNA

What is the function of RNA polymerase in gene regulation?

• To start transcription

• To increase the rate of transcription

• To start translation

• To decrease the rate of transcription

What is the role of a promoter in gene regulation?

• To provide a binding site for RNA polymerase

• To block RNA polymerase

• To code for enzymes

• To produce repressor

What is the function of an operator in gene regulation?

• To increase the rate of translation

• To produce mRNA

• To bind to a repressor

• To start transcription

What happens when a repressor binds to the operator?

• It blocks RNA polymerase

• It increases the rate of transcription

• It decreases the rate of translation

• It produces more DNA

What is the purpose of an operon?

• To regulate genes

• To produce more DNA

• To increase the rate of translation

• To decrease the rate of transcription

What is the function of enzymes in an operon?

• To break down substances

• To produce mRNA

• To bind to a repressor

• To start transcription

What is the role of the repressor in an operon?

• To increase the rate of transcription

• To start translation

• To block RNA polymerase

• To provide a binding site for RNA polymerase

What happens when lactose binds to the repressor in an operon?

• The repressor blocks RNA polymerase

• The repressor binds to the operator

• The repressor's conformation changes

• The repressor produces mRNA

What is the purpose of the Lac Operon?

• To break down lactose sugar

• To produce more DNA

• To decrease the rate of transcription

• To increase the rate of translation