what 2 molecules make up the sides of dna what 2 molecules make up the backbone of dna what 2 molecules form the backbone of dna what 2 molecules make up fat what 2 molecules form the sides of dna ladder what 2 molecules make up adenosine what 2 molecules do the plant take in 2 molecules 2 molecules of glycine joined together 2 molecules that make up ribosomes 2 molecules of oxygen 2 molecules of reduced nad 2 molecules of hydrogen formula