Which of the following statements about scientific theories are true? (a) theories cannot be tested (b) theories are the same as hypotheses. (c) theories can be used to predict the existence of as yet unobserved things or phenomena. (d) theories are ethical principles based on a religious foundation

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.

What form of anesthetic was used for field surgery

Located at the epidermal-dermal junction of the skin. select all true statements about the transformation of melanocytes into abnormal cell