Question

The addition of the poly A tail to a eukaryotic mRNA requires:

a. a 3'-OH group on the RNA.
b. poly A polymerase.
c. a conserved sequence (AAUAAA) near the 3' end of the RNA
d. ATP
e. all of the above

Answer 1

The addition of the poly A tail to a eukaryotic mRNA requires a 3'-OH group on the RNA, poly A polymerase, a conserved sequence (AAUAAA) near the 3' end of the RNA, and ATP.

Step-by-step explanation:

The addition of the poly A tail to a eukaryotic mRNA requires several components: a 3'-OH group on the RNA, poly A polymerase, and a conserved sequence (AAUAAA) near the 3' end of the RNA. Additionally, the addition of the poly A tail requires ATP as the source of adenine residues.