Chapter 5

Last update by mayur on 03/27/2014
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Which of the following statements about the 5' end of a polynucleotide strand of DNA is

correct?

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

B) The 5' end hasa phosphate group attached to the number 5 carbon of ribose.

C) The 5' end has thymine attached to the number 5 carbon of ribose.

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

E) The 5' end is the fifth position on one of the nitrogenous bases.

Answer:

B) The 5' end hasa phosphate group attached to the number 5 carbon of ribose.



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