First off - it is important to understand that a nucleotide (the monomer of DNA) is composed of 3 things: a sugar, a phosphate group, and a nitrogenous base. Next - understand that the "backbone" of DNA is composed of the sugars and phosphates.
That leaves you with nitrogenous bases. Hydrogen bonds form between the nitrogenous bases off opposite strands in the double helix. THIS is what holds the double helix together.
Deoxyribose sugars and phosphate groups that are connected by phosphodiester bonds.
what holds the sides of the DNA ladder together
Vacuole
Hydrogen bonds
Answer:Two strands of DNA link together
Its Hydrogen Bonds that hold the two strands of the DNA double helix together.
A DNA molecule has the shape of a double-stranded helix.
Hydrogen bonds.
what holds the sides of the DNA ladder together
hydrogen bonds. The other bonds are covalent bonds.
The two strands of DNA are held together by hydrogen bonds between the nitrogen base pairs.
a double helix
Vacuole
Hydrogen bonds
hydrogen bonds
Hydrogen bonds
A DNA molecule is held together by its hydrogen bonds. The bonds are in between the bases of the molecule, for example cytosine and guanine. Because hydrogen bonds are weak, they are able to break apart easily and split when the molecule needs to be separated to bond with another DNA molecule for reproduction.
the nucleus