DNA, Proteins have hydrogen bonds.
Hydrogen bonds are special type of dipole dipole attraction. Hydrogen is directly attached to negative atoms. There are different types of hydrogen bonds :
Hydrogen atoms are attached to negative atoms such as N and O. There are double bonds between purines in DNA and three hydrogen bonds between pyrimidines.
The most common hydrogen bonds in alpha and beta plated sheet in proteins. Hydrogen bond is a non covalent type of bonding between molecules.
Hydrogen bond is the fundamental structure that stabilizes DNA or RNA. Hydrogen bond is weak, noncovalent interaction but large number of hydrogen bonds between complementary base pairs in DNA.
Therefore DNA, Proteins have hydrogen bonds.
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