The two strands of DNA are held together by __________Group of answer choiceshydrogen bondspeptide bondsnitrogen bondsglycosidic linkage

Correct Answer

The two strands of DNA are held together by hydrogen bonds.

Explanation

DNA (deoxyribonucleic acid) consists of two strands that form a double helix structure. The strands are complementary to each other, meaning that the sequence of bases on one strand dictates the sequence on the other strand. The pairs of nitrogenous bases (adenine with thymine, and cytosine with guanine) are held together by hydrogen bonds, which are weak yet crucial for the stability of the DNA structure.

This allows the DNA strands to separate during processes like replication and transcription while maintaining the integrity of the genetic information when they come back together. The other bonds mentioned—peptide bonds, nitrogen bonds, and glycosidic linkages—serve different roles in biological molecules (proteins and carbohydrates, respectively) and are not responsible for holding together the strands of DNA.