Real question; my mom found out yesterday that our dog has cancer. but i do not know how to tell if it is something else. he is shaking in his hind legs, he has not eaten in 3 whole days, and he can barely walk, and also he is super bony it looks like he has no meat at all. it there a possibility i can still save him. if you do not know the answer do not answer, i need an answer with someone who has experience, or might know what i'm talking about.

One function of the poly-a tail on eukaryotic mrna sequences is to 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 are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. 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.