Enzymes That Break Down DNA Catalyze the Hydrolysis of the Covalent

question 18

Multiple Choice

Enzymes that break down DNA catalyze the hydrolysis of the covalent bonds that join nucleotides together. What would happen to DNA molecules treated with these enzymes?

• A) The two strands of the double helix would separate.
• B) The phosphodiester linkages of the polynucleotide backbone 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.

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