mRNA 2022

During initiation process...

• An RNA transcript that is ready to be used in translation is called a messenger RNA (mRNA)

• RNA strand gets longer, thanks to the addition of new nucleotides.

• RNA polymerase binds to the DNA of the gene at a region called the promoter.

Where does RNA polymerase know where to start copying down instructions in the DNA molecule?

• By looking for Promotors in the code to signal to start copying

• By looking for Stop Codes in the code to signal to start copying

• It doesn't matter where it starts, it will find it.

• mRNA signals to the RNA polymerase where to start

Where on the DNA strand does RNA polymerase attach?

• Origin of Replication

• Termination site

• Promotor site/region (TATA box)

• Polymerator

RNA must be edited before it can be used to make Proteins, what happens during this editing process?

• A spliceosome cuts out exons, reconnects the introns

• A spliceosome cuts out the introns, reconnects the exons

• A splicesome pairs nucleotides with the DNA base pairs

• The RNA is checked for typos

Removal of noncoding sequences from the pre-mRNA is called

• Capping

• Splicing

• Tailing

• Spooling

The transcription of RNA from DNA takes place in several steps. In which step of transcription does RNA polymerase actively build the mRNA strand by attaching RNA bases to one another one by one by using the DNA as a template?

• Initiation

• Elongation

• Termination

• Translation

RNA polymerase adds nucleotides to the 5' end.

• True

• False