Which of the following statements about the 5′ end of a polynucleotide strand of RNA is correct?
A) It has a hydroxyl group attached to the number 5 carbon of ribose.
B) It has a phosphate group attached to the number 5 carbon of ribose.
C) It has phosphate attached to the number 5 carbon of the nitrogenous base.
D) It has a carboxyl group attached to the number 5 carbon of ribose.

Question

Quizplus · Accepted Answer

The 5′ end of a polynucleotide strand of RNA has a phosphate group attached to the number 5 carbon of ribose, distinguishing it from the 3′ end, which typically has a hydroxyl group attached to the 3′ carbon of ribose.

Which of the Following Statements About the 5′ End of a Polynucleotide