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Chapter 5

Question:

DNAase is an enzyme that catalyzes the hydrolysis of the covalent bonds that join

nucleotides together. What would first happen to DNA molecules treated with DNAase?

A) The two strands of the double helix would separate.

B) The phosphodiester bonds between deoxyribose sugars would be broken.

C) The purines would be separated from the deoxyribose sugars.

D) The pyrimidines would be separated from the deoxyribose sugars.

E) All bases would be separated from the deoxyribose sugars.

Answer:

B) The phosphodiester bonds between deoxyribose sugars would be broken.



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Last update by mayur on 03/27/2014
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Question: DNAase is an enzyme that catalyzes the hydrolysis of the covalent bonds that join nucleotides together. What would first happen to DNA molecules treated with DNAase? A) The two strands of the double helix would separate. B) The phosphodiester bonds between deoxyribose sugars would be broken. C) The purines would be separated from the deoxyribose sugars. D) The pyrimidines would be separated from the deoxyribose sugars. E) All bases would be separated from the deoxyribose sugars.
Answer: B) The phosphodiester bonds between deoxyribose sugars would be broken.