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GENETICS_quiz4 - a X-ray diffraction data b base...

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GENETICS (BIO 325) Fall 2009 Quiz 4 for discussion session Name_________________________________________Date________Unique#______ Write unique # you registered 51220 F 8-9a 51225 F 9-10a 51230 W 11-12p 51235 W 12-1p 1. What would happen if we inject a mixture of living rough bacteria and heat killed smooth bacteria into a mouse? (Griffith's experiment) a. no effect b. a mouse would die c. transduction d. conjugation 2. The type of transduction does the transducing particle carry only specific portions of the bacterial genome is a. general transduction b. abortive transduction c. specialized transduction d. signal transduction 3. Hershey and Chase generated 2 kinds of T2 bacteriophage labeled with 35 S and 32 P. What can we conclude if only 35 S found in bacteria cell? a. genetic material is protein b. genetic material is RNA c. genetic material is DNA d. both DNA and RNA is genetic material 4. which one is NOT the significant data that Watson and Crick used to propose structure of DNA?
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Unformatted text preview: a. X-ray diffraction data b. base composition analysis c. nucleotide structure d. none of the above 5.Meselson-Stahl experiment confirmed that DNA replication is ________? a. conservative b. semiconservative c. dispersive d. none of the above 6. In the mapping using generalized transduction, among Leu+ transductants, we get result like Leu+ Arg+ His-40% and Leu+ Arg- His+ 5%. Which gene is close to Leu+? a. Arg+ b. His+ c. none 7. Which is not a requirement for DNA replication? a. primer b. template c. dNTPs d. none of the above 8. The last enzyme that functions in the synthesizing the lagging strand is a. primase b. DNA ligase c. DNA polymerase I d. DNA polymerase III 9. which one is not the activity of DNA polymerase I? a. 5’ to 3’ polymerase activity b. 3’ to 5’ exonuclease c. 5’ to 3’ exonuclease d. endonuclease 10. Okazaki fragments are a. found in the leading strand b. continuous c. degraded completely by DNA polymerase I d. joined together by DNA ligase....
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