12 Questions
Which enzyme cleaves double-stranded siRNA into smaller fragments?
Dicer
What is the function of the RISC complex in RNA interference?
Pairing with mRNA to inhibit translation or cleaving of the mRNA
In RNA interference, what is used for gene knockdown in research?
Double-stranded RNA
What is the role of the antisense RNA in the formation of the RISC complex?
Forms RISC complex with Argonaut to pair with mRNA
What is the role of tryptophan in the regulation of the trp operon?
Tryptophan acts as a co-repressor, binding to the inactive repressor and making it active to prevent transcription of the trp operon genes
What is the consequence of an excess of tryptophan in the environment or in the cell?
Transcription of the trp operon genes is limited, saving the cell energy and resources
True or false: Tryptophan acts as a co-repressor in the regulation of the trp operon by preventing transcription of the structural genes.
True
True or false: When there is an excess of tryptophan in the environment, the trp operon is repressed, leading to limited transcription of the structural genes involved in tryptophan synthesis.
True
RNA silencing limits the transcript level by activating a sequence-specific RNA degradation process.
True
In the Lac operon, LacY encodes for transacetylase.
False
TCS is a type of regulatory system used by bacteria to detect chemical and/or physical signals found in its environment.
True
SiRNA is a type of RNA interference that involves short exogenous interfering dsRNA.
True
Test your knowledge of E. coli's tryptophan synthesis with this quiz. Explore the role of the trp operon and the genes involved in the process.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
