Question

One function of the poly-A tail on eukaryotic mRNA sequences is to help the mRNA be transported from the nucleus to the cytoplasm. Prokaryotic mRNA also has a poly-A tail. Choose the best explanation of the prokaryotic poly-A tail.

A. Prokaryotic poly-A tails have the same functions as eukaryotic poly-A tails, because this process is highly conserved throughout different species.
B. Prokaryotic poly-A tails are composed of a different molecular structure compared with eukaryotic poly-A tails.
C. Prokaryotic poly-A tails aren't important, because prokaryotes don't have nuclei.
D. Prokaryotic poly-A tails have other functions, because prokaryotes don't have nuclei.

Answer 1

Answer: I believe the answer is D. Prokaryotic poly-A tails have other functions, because prokaryotes don’t have nuclei.

Reasoning: A prokaryote is a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle. Thus the prokaryotic poly-A tail can not serve the same function as a eukaryotic poly-A tail.