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B250WT1S05 - M.CO 411 MED PR E D41 1.C OM BIL 250/P Exam 1...

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BIL 250/P Exam 1, the underlined choice is the correct answer. I. Multiple choice questions (Choose the best answer from among those available) 1. A virus contains 10% adenine, 24% thymine, 30% guanine, and 36% cytosine. Is the genetic material in this virus ______________? A. double-stranded DNA B. single-stranded DNA C. single-stranded RNA D. double-stranded RNA E. a circular DNA 2. Frame-shift mutations are often caused by which of the following changes to nucleotides in DNA? 3. Which of the following mutagens would be most likely to physically damage DNA? 4. The huge human genome can be replicated in just 8 hours or so; how is this possible? 5. Which of the following can function as a RNA polymerase? A. Topoisomerase I B. Helicase C. Ligase PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.COM - PREMED411.CO M
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D. Primase E. Gyrase 6. In E. Coli , the high specificity that RNA polymerase shows for regions just upstream of coding sequences is conferred by: 7. In what way does Transcription differ from replication? 8. Which of the following is NOT an appropriate descriptor of the genetic code? 9. In which type of E. coli RNA would you most likely find chemically modified bases? A. rRNA B. tRNA C. snRNA D. scRNA E. mRNA
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