Which of the following terms describes bacteriophage

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15) Which of the following terms describes bacteriophage DNA that has become integrated into the host cell chromosome? A) intemperate bacteriophages B) transposons C) prophages D) T-even phages E) plasmids Answer: C Topic: Concept 19.2 Skill: Knowledge/Comprehension 16) Which of the following statements describes the lysogenic cycle of lambda ( ) phage? 17) Why do RNA viruses appear to have higher rates of mutation? nswer: B Topic: Conc%pt 19.2 Skill: Knowledge/Comprehension 18) Most molecular biologists think that viruses originated from fragments of cellular nucleic acid. Which of the folhowing observations supports this theoby?
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6 19) A researcher lyses a cell that contains nucleic acid molecules and capsomeres of tobacco mosaic virus (TMV). The cell contents are left in a covered test tube overnight. The next day this mixture is sprayed on tobacco plants. Which of the following would be expected to occur? A) The plants would develop some but not all of the symptoms of the TMV infection. B) The plants would develop symptoms typically produced by viroids. C) The plants would develop the typical symptoms of TMV infection. D) The plants would not show any disease symptoms. E) The plants would become infected, but the sap from these plants would be unable to infect other plants. Answer: C Topic: Concept 19.3 Skill: Application/Analysis
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