. Capping serves all of the following purposes except: a. Movement through the nuclear pore b. Binding to the small ribosomal subunit for initiation of translation c. Protection of the 3′ end d. Protection of the 5″ end 4. Transition from elongation of the pre-mRNA transcript to Poly-A-addition requires all of the following except a. Serine 5 b. Serine 2 c. ATP d. RNA polymerase e. TFIID . Which snRNP are recruited to the slice site by: a. Ul snRNP b. U2AF c. BBP 6. Which of the following statements best describes the relative affinity of the Ec core RNA polymerase for DNA? Core polymerase would have a higher affinity for DNA sequences that do not contain promoters than it would for DNA sequences that do contain promoters a. b. Core polymerase would have a higher affinity for DNA sequences that do contain a promoter than it would have for DNA sequences that do not contain a promoter Core polymerase would have the same affinity for DNA sequences that contain promoters and sequences that do not contain promoters. c. d. Core polymerase does not bind DNA. Sigma factor is required for DNA binding.