Question

DNA can be distinguished from its “cousin” RNA because

A. DNA is always single stranded
B. DNA is always double stranded
C. DNA is comprised of a base, a ribose sugar ring attached to a phosphate group
D. RNA has an hydroxyl group on the 3’ carbon of its ribose ring structure
E. DNA has an hydroxyl group on the 2’ carbon of its ribose ring structure
F. RNA has an hydroxyl group on the 2’ carbon of its ribose ring structure
G. DNA has an hydroxyl group on the 5’ carbon of its ribose ring structure

Answer 1

Option F

A and B are incorrect because both DNA and RNA can be single stranded and double stranded.

All other options are incorrect because -

DNA contains deoxyribose sugar. It does not contain hydroxyl at 2' carbon.

RNA contains ribose sugar. It contains hydroxyl at 2' carbon.

Please rate high.