and a nonvirulent R S the R strain to be 2-47. The bacterium Streptococcus pneum
ID: 271013 • Letter: A
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and a nonvirulent R S the R strain to be 2-47. The bacterium Streptococcus pneumonioe has a virulent S strain to mice. The S strain contains a chemical factor that can transform series of experiments conducted by injecting combinations of these strains into as "mice alive" or If DNA is the transforming factor, match the expected results of each experiment as "mice alive" or "mice dead" R strain (nonvirulent) S strain (virulent) Heat-treated S sirain R strain and heat-treated S strain R strain and heal-treated S strain with Alive Dead es, ipids, RNA, and R strain and heat-treated S strain with DNA destroyed Choose "A" for "mice alive". Choose "B" for "mice dead". 42. Result of Experiment A is 43. Result of Experiment B is- 44. Result of Experiment C is 45. Result of Experiment Dis 46. Result of Experiment E is 47. Result of Experiment F is 48. Which enzyme is responsible for the replication of chromosome ends in germ cells and certain proliferating somati cells? a. DNA polymerase 6 b. Topoisomerase C. DNA ligase d. Telomerase e. Geminin 49. The diagram depicts DNA that is undergoing replication. Which is the leading strand? HIYA?HIHIHI a. strand A b. strandB The Meselson and Stahl experiment starts with E. coli containing 15N/15N labeled DNA grown in 14N media. W result did Meselson and Stahl observe by sedimentation equilibrium centrifugation to provide strong evidence for a. The first generation has hybrid 15N/14N DNA, and the second generation has hybrid 15N/14N DNA b. Both the first and second generation have both 15N/15N DNA and 14N/14N DNA. No hybrid 15N/14N DN C. The first generation has hybrid 15N/14N DNA, and the second generation has both hybrid 15N/14N D semiconservative model of DNA replication? 15N/15N DNA or 14N/14N DNA was observed. observed. 14N/14N DNA. No 15N/15N DNA was observed 54. Match each protein to its role in DNA replication using the following choices: a DNA topoisomerase b. HelicaseExplanation / Answer
42- live
43- dead
44- live
45- dead
46- dead
47- live
48- (A) dNA polymerase
49- (A) strand A
50- (c) is correct.
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