Biology 1-8 cumulative

Last update by dangkathy04 on 05/03/2014
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Which of the following statements about the 5ʹ end of a polynucleotide strand of DNA is correct?

A) The 5ʹ end has a hydroxyl group attached to the number 5 carbon of ribose.

B) The 5ʹ end is the fifth position on one of the nitrogenous bases.
C) The 5ʹ end has phosphate attached to the number 5 carbon of the nitrogenous base.

D) The 5ʹ end has a carboxyl group attached to the number 5 carbon of ribose.

E) The 5ʹ end has a phosphate group attached to the number 5 carbon of ribose.

Answer:
E) The 5ʹ end has a phosphate group attached to the number 5 carbon of ribose.

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