(mark )an enzyme is a catalyst used by living things to promote and regulate chemical reactions. what is the most likely enzyme for the chemical reaction depicted below? a) the enzyme pictured would work at a very low temperature in a very high phb) the inside picture would look at a very high temperature in a very low phc) enzymes work best only at specific temperatures and ph'sd) temperature and ph do not affect enzyme efficiency

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.