Refer to the Chemical Formula of Dideoxycytidine

Multiple Choice

Refer to the chemical formula of dideoxycytidine. The drug dideoxycytidine, used to treat certain viral infections, is a nucleotide made with 2,3-dideoxyribose.This sugar lacks -OH groups at both the 2 and the 3 positions.This drug stops the growth of a DNA chain when added to DNA because

A) DNA ligase cannot link nucleotides.
B) DNA helicase is blocked.
C) DNA polymerase requires a 3 end -OH group.
D) telomerase is unable to elongate the lagging strand.
E) the sliding DNA clamp dissociates from the DNA strand.