Gene Expression in a Prokaryotic System – RNA Basics
Über den Vortrag
Der Vortrag „Gene Expression in a Prokaryotic System – RNA Basics“ von Kevin Ahern, PhD ist Bestandteil des Kurses „Year 1 – Term 2 – Basic Principles of Medicine II – Endocrinology and Reproduction“.
Quiz zum Vortrag
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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Dozent des Vortrages Gene Expression in a Prokaryotic System – RNA Basics
Kevin Ahern, PhD
Dr. Kevin Ahern is a Professor in the Department of Biochemistry and Biophysics at Oregon State University (OSU), USA.
He obtained his PhD in Biochemistry from Oregon State University. Currently, he teaches courses for health sciences students at OSU.
He is co-author of three Open Educational electronic textbooks on Biochemistry and a Guide to Getting Into Medical School.
Due to his achievements, he earned OSU’s highest teaching recognition, the Elizabeth P. Ritchie Distinguished Professor Award in 2017.
Within Lecturio, Dr. Ahern teaches courses on Biochemistry and on "How to Get into Medical School”.
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