What is an operon?
Operon Review

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Biology
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A group of genes that are regulated together and transcribed as a single mRNA molecule.
2.
FLASHCARD QUESTION
Front
What is the function of the operator in an operon?
Back
It is the site where a repressor protein can bind to block transcription.
3.
FLASHCARD QUESTION
Front
What is the role of the promoter in an operon?
Back
It is the region where RNA polymerase binds to initiate transcription.
4.
FLASHCARD QUESTION
Front
What is a repressor protein?
Back
A protein that binds to the operator to prevent transcription of the operon.
5.
FLASHCARD QUESTION
Front
What is an inducer in the context of operons?
Back
A molecule that binds to a repressor, causing it to release from the operator and allowing transcription.
6.
FLASHCARD QUESTION
Front
What is the difference between inducible and repressible operons?
Back
Inducible operons are usually off and can be turned on by an inducer; repressible operons are usually on and can be turned off by a repressor.
7.
FLASHCARD QUESTION
Front
What is the trp operon?
Back
A repressible operon that is involved in the biosynthesis of the amino acid tryptophan.
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