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This activity contains 8 questions.

Question 1
1 In his work with pneumonia-causing bacteria and mice, Griffith found that
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Question 2
2 What is the basis for the difference in how the leading and lagging strands of DNA molecules are synthesized?
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Question 3
3 In analyzing the number of different bases in a DNA sample, which result would be consistent with the base-pairing rules?
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Question 4
4 The elongation of the leading strand during DNA synthesis
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Question 5
5 In a nucleosome, the DNA is wrapped around
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Question 6
6 E. coli cells grown on 15N medium are transferred to 14N medium and allowed to grow for two more generations (two rounds of DNA replication). DNA extracted from these cells is centrifuged. What density distribution of DNA would you expect in this experiment?
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Question 7
7 A biochemist isolates, purifies, and combines in a test tube a variety of molecules needed for DNA replication. When she adds some DNA to the mixture, replication occurs, but each DNA molecule consists of a normal strand paired with numerous segments of DNA a few hundred nucleotides long. What has she probably left out of the mixture?
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Question 8
8 The spontaneous loss of amino groups from adenine in DNA results in hypoxanthine, an uncommon base, opposite thymine. What combination of proteins could repair such damage?
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