The outside is the sugar-phosphate 'back-bone', while the inside is where the four bases A T C & G meet to exchange their information.
Alternating deoxyribose and phosphate molecules.
A DNA molecule consists of two strands that are made up of sugar (deoxyribose) and phosphate molecules. The sides of the DNA molecule are formed by alternating sugar and phosphate molecules linked together to create a backbone for the molecule.
A phosphate group bonded covalently to a sugar molecule.
nucleus
The backbone of the DNA molecule is made up of a sugar (deoxyribose) bonded to a phosphate group bonded to another sugar and then another phosphate and so on. These are very strong covalent bonds that are not easily broken.
Chromatin
The outside is the sugar-phosphate 'back-bone', while the inside is where the four bases A T C & G meet to exchange their information.
Macro?
The sides of the DNA molecule are made up of repeating sugar-phosphate groups, not nitrogen bases. The nitrogen bases are arranged in the middle of the DNA molecule and form the rungs of the double helix structure.
The sides of a DNA molecule are made up of alternating sugar molecules (deoxyribose) and phosphate groups that form the sugar-phosphate backbone. Each sugar molecule is connected to one of four nitrogenous bases (adenine, thymine, cytosine, or guanine) that extend inward from the backbone and pair with a complementary base on the opposite strand.
The sides of the DNA latter consist of the sugar deoxyribose and phosphates. The bond between the latter and the nitrogen bases together is known a a nucleotide. Nucleotides are molecules that make up the structure of DNA and RNA.
Phosphate and sugar make up the sides of a DNA ladder.