Which of the Following is Found at the 5' End

Question

Which of the following is found at the 5' end of a DNA strand?
A) a phosphate group
B) a hydrogen bond
C) a hydroxyl group
D) histones
E) a methyl group

Accepted Answer

The 5' end of a DNA strand has a phosphate group attached to the 5' carbon of the deoxyribose sugar in the nucleotide, while the 3' end has a hydroxyl group attached to the 3' carbon of the deoxyribose sugar in the nucleotide. This is important for DNA replication and the formation of phosphodiester bonds between nucleotides.