Proper handling of a compound light microscope includes all of these procedures with the exception ofa)turning the fine adjustment to raise the body tube.
b. cleaning the objective lens and eye piece with lens paper.
c. placing the scope on the lab bench with the arm facing you.
d. carrying the scope with one hand on the arm, the other on the base.

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.