A: mRNA degradation is a mechanism that eliminates mRNA that is no longer needed in the cell or has… Q: How many different polypeptides can be producedthrough alternative splicing of the same pre-mRNA?

Question: Part A What is polycistronic mRNA? mRNA that encodes multiple different polypeptide products mRNA that is present in many copies in the cell mRNA that includes multiple coding segments (exons) interrupted by intervening sequences (introns) mRNA that is being translated by multiple ribosomes simultaneously

The lac operon, a model of inducible operon, regulates genetic expression in bacteria through the metabolic use of lactose, composed of three structural genes: lacZ, lacY, and lacA, which encode enzymes involved in lactose metabolism.

This would allow for multiple proteins necessary for a particular function to be translated together. One of your colleagues says that is a good dea, but if you decide to go with polycistronic mRNA, you had better make sure to karyotic translation system. Why might it be problematic to use a eukaryotic translation system with polycistronic mRNA?

Question: Explain the following statement: “Bacterial mRNA are polycistronic.”All mRNA have multiple positions with the sequence AUG, but only specific AUG actually function as start codons. How does the ribosome identify the start codon in bacteria? How does the ribosome identify the start codon in eukaryotes?

A) In a polycistronic mRNA, more 3' coding sequences are always translated with a lower frequency/produce less protein product than coding sequences closer to the 5' end of the mRNA. Briefly explain why this is the case/why all the coding sequences on a polycistronic mRNA don't give rise to similar amounts of protein product.

Polycistronic mRNA :- A contiguous mRNA with more than two genes that can be translated into proteins. The lac operon contain three structural genes , lacZ, lacY and lac A, encoding enzymes -galactosidase, -galactoside permease , a …View the full answer

Question: A polycistronic mRNA contains multiple a. promoters d. mRNAs b. Shine-Dalgarno sequences e. polypeptide-encoding sequences c. Kozak sequences

A bacterial operon consists of_____. a single gene that can be spliced in different ways to produce different proteins. multiple genes, each transcribed by different promoters, which are regulated by different cis-acting factors. a single gene transcribed by multiple promoters to form a polycistronic mRNA. multiple genes transcribed from the

The transcription product of a bacterial operon is a polycistronic mRNA can yield several proteins through alternative splicing is a monocistronic mRNA o is an rRNA Although the expression of most genes is tightly regulated, some genes are expressed at …