The structure of DNA and RNA differs in that:

A. DNA is typically single-stranded, whereas RNA is double-stranded.
B. DNA folds into complex three-dimensional structures necessary for its activity.
C. DNA building blocks have four different nitrogenous bases, whereas RNA has a fifth base.
D. DNA contains a pentose sugar that has an additional hydroxyl group, which is lacking in the sugar found in RNA.
E. RNA folds into complex three-dimensional structures necessary for its activity.


E

Biology & Microbiology

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