In an experimental situation, a student researcher inserts an mRNA molecule into a eukaryotic cell after he has removed its 5' cap and poly-A tail. Which of the following would you expect him to find?

(a)The mRNA could not exit the nucleus to be translated.
(b)The cell recognizes the absence of the tail and polyadenylates the mRNA.
(c)The molecule is digested by restriction enzymes in the nucleus.
(d)The molecule is digested by exonucleases since it is no longer protected at the 5' end.
(e)The molecule attaches to a ribosome and is translated, but more slowly.

In an experimental situation, when a student researcher insertes an mRNA molecule into a eukaryotic cell after removal of it's 5' cap and poly-A tail. He would get a cell recognizes the absence of the tail and polyadenylades the mRNA. Thus, option b is correct .

What is mRNA?

mRNA is define as messenger ribonucleic acid that contain single-strand molecule of RNA that place a corresponding role in genetic sequence of gene, and is read by a ribosome in the process of synthesizing a protein.

The structure of mRNA is long, single-stranded molecule consisting of nucleotides attached by phosphodiester bonds.

The main function of mRNA is to carry information of protein from the DNA in the cell's nucleus to the cytoplasm of cell.

Therefore, when mRNA molecule inserted into eukaryotic cell after removal of 5's cap and poly-A tail the result which is expected is a cell recognize the absence of the tail and ployadenylates the mRNA . Thus option b is correct.

Learn more about mRna here :

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