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Unformatted text preview: Which of the following statements concerning DNA replication is TRUE? .r /@ RNA synthesis is required for DNA replication on both the leading strand and f \‘ \ lagging strand. 1/ >6 ’7 ‘l [A B. DNA replication requires a single Polymerase 1n prokaryoes An origin of replication 15 only required for DNA synthesis on the leading strand: , D~__Okazaki.fragmentsare_foundon the leading and lagging strands. B More origins of replicatlonfon sequences)_ are needed for DNA swsis on the \laggin r§1ra11ddeoxyribo‘nuclease.’ N" 3'? 28. Uracil in DNA: «9/ . i 0 may be replaced with cytosine as a result of DNA repair 1/ ii“B./ is enzymatically converted to thymine by methylation / C. is removed by a deoxyribonuclease 3/ D. is removed by a ribonuclease UVC '- E. None of the above. 29. Which of the following occurs in the 3' to 5' direction? \ A. The removal of RNA from Okazaki fragments. 6 \ ""5 3 B. The reaction catalyzed by photolyase. /O. The editing function of DNA polymerase I. ‘/ b )9; D. The polymerization reaction catalyzed by reverse transcriptase. E The translation omeNA. §\ ‘3) 3' r\ 3 . Which of the following statements concerning translation(p rotein nafimesis) lS FALSE? 77) x W tu‘CWGa‘ *' 9 ‘r WWW C @ ATP 15 require fo or COiniWomplex formation on both prokaryotic and 4? (5’6! 0.3;? d" eukaryotic’_______ ribosomes. (“)0ng (NP/£3271“) ,1 ”/fo /\ 1/5,?” Elongation” factors facilitate the binding of aa—tRNA to ribosomes. 'z/m’: y’ '/ ' f/ / AUG 15 an initiation codon 1n both prokaryotes and eukaryotes. ‘/ f f ‘ D. The large and small ribosomal subunits dissociate after translation termination. / B. All ribosomes consist of two subunits. / 31. Which of the following statements is FALSE? A. Translation of procaryotic mRNA usually begins before RNA polymerase has finished transcribing the geneM B GC-rich DNA is more resistant to heat denaturation than AT-rich DNA. ~/ ‘0 “J” Y N C All nucleic acid bases are covalently attached to the 1' position of the ribose D. Most eukaryotic mRNA molecules undergo splicing reactions before they are ;\ translated. E - When complementary regions of DNA or RNA form double strands, purines w‘ usually pair with purines and pyrimidines usually pair with pyrimidines. / {2:977 , ' 7. ”mummy enzymein DNA replication in prokaryotiq WM”E' ”m" Qol [[1 3000 ”(mold/211 Jill '3 DNA polymerase I W 86 CON DNA polymerase 11%,j 000 W RNA polymerase 00 {Lin bud F GHQ r none of the above ll/POLT 32. mafia? ...
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