Gene Expression in a Prokaryotic System – RNA Basics
About the Lecture
The lecture Gene Expression in a Prokaryotic System – RNA Basics by Kevin Ahern, PhD is from the course RNA and the Genetic Code.
Included Quiz Questions
Which of the following is true regarding an operon?
- It contains multiple genes under the control of a single promoter.
- It is the way eukaryotes organize genes in their genome.
- It is not found in prokaryotes.
- It is a name for a set of spliced genes.
- Genes within an operon are transcribed continuously and cannot be induced.
What does the gene lacZ express?
- β-galactosidase
- β-galactoside permease
- β-galactoside transacetylase
- Lactase
Which molecule controls the binding of regulatory proteins to the control sites of the lac operon?
- cAMP
- cGMP
- CAP
- Repressor protein
- ADP
Which of the following statements is correct regarding the lac operon in E. coli bacterium?
- LacZ cleaves lactose into glucose and galactose.
- Both cAMP and allolactose prevent the expressions of Lac operon by binding with the CAP protein.
- The Lac operon contains four genes for lactose metabolism.
- The Lac repressor binds to the P site to prevent transcription.
- The CAP site binds to CAP which prevents transcription and blocks RNA polymerase attachment.
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Author of lecture Gene Expression in a Prokaryotic System – RNA Basics
Kevin Ahern, PhD
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