Question

Astudent researcher inserts an mRNA molecule into a eukaryotic cell aftershe has removed its 5′ cap and poly-A tail. Which of the following processes would you expect her to find to have occurred?A)The mRNA is quickly converted into a ribosomal subunit.B)The cell adds a new poly-A tail to the mRNA.C)The mRNA attaches to a ribosome and is translated, but more slowly.D)The molecule is less stable because it is not protected at the 5′or 3’ ends

Answer 1

The molecule is less stable because it is not protected at the 5′or 3’ ends

Explanation:

The RNA transcription occurs in the eukaryotic cell in a complex way. It has to under-went certain processes to become a mRNA or messenger RNA. To convert into an actual messenger RNA addition of 5’cap and poly A tail with the RNA is done.

Both of them are helpful in protecting the transcription and translating it on the ribosome. So, a removal of them would make the process unprotected and unstable as the cap prevents the transcription from breaking down and the tail makes it stable.