【多选题】What can capping and polyadenylation of eukaryotic mRNA do?
A.
increase the stability of a eukaryotic mRNA molecule
B.
facilitate its export from the nucleus to the cytosol
C.
generally mark the RNA molecule as an mRNA
D.
used by the protein-synthesis machinery to make sure that both ends of the mRNA are present and that the message is therefore complete before protein synthesis begins