Question

eukaryotes, the 3 poly-a tail is attached to
multiple choice
poly-a polymerase.
the template strand of dna.
trna.
the ribosome.
mrna.

Explanation:

In eukaryotes, after transcription, a poly - A tail is added to the 3' end of the pre - mRNA molecule by the enzyme poly - A polymerase. This poly - A tail helps in mRNA stability, export from the nucleus, and translation initiation. It is not attached to poly - A polymerase (which is the enzyme adding it), not to the DNA template strand, not to tRNA (which is involved in translation for amino - acid transfer), and not to the ribosome (the site of protein synthesis).

Answer:

E. mRNA