Exam1ak - Genetics and Cellular Biology (Biol 204) EXAM ONE...

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Genetics and Cellular Biology (Biol 204) Name _______________________________ EXAM ONE Feb. 2, 2007 Each question is worth 2 points. Circle the letter that indicates the best answer. a) b) c) d) 1. Which protein unwinds the double stranded DNA in order to separate the parental strands into single stranded DNA? a) helicase b) single-stranded binding protein c) gyrase d) topoisomerase 2. If 20% of a double stranded DNA sample is A, how much of that sample is G? a) 20% b) 30% c) 40% d) can’t be determined. 3. The F factor is an example of a: a) conjugative plasmid b) insertion sequence c) restriction fragment d) LINE element 4. The Meselson-Stahl experiment demonstrated: a) liberal replication. b) conservative replication. c) semiconservative replication. d) theta replication. 5. How are Hfr chromosomes different from other E. coli cells? a) They have F factors incorporated in them. b) They have Lambda viruses incorporated in them. c) They have antibiotic resistance cassettes incorporated in them. d)
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Exam1ak - Genetics and Cellular Biology (Biol 204) EXAM ONE...

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