1.

Which structural feature is found in the single-stranded DNA molecule?

A. It can have a negatively-charged backbone composed of nitrogenous bases.
B. Each 3 ,5 -phosphodiester bond will contain one phosphate group linking two deoxyribose sugars
C. It can have one end with a 5 -phosphate group while the other end has a 2 -hydroxyl group.
D. Each purine and pyrimidine will be paired with a complementary base.
Answer» C. It can have one end with a 5 -phosphate group while the other end has a 2 -hydroxyl group.


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