1. Phosphate group: A phosphorus atom bonded to four oxygen atoms, forming the backbone of the DNA molecule.
2. Deoxyribose sugar: A five-carbon sugar molecule that alternates with the phosphate groups to form the sugar-phosphate backbone of the DNA molecule.
3. Nitrogenous bases: Adenine (A), Thymine (T), Cytosine (C), and Guanine (G), which are the building blocks of the genetic code. The order and sequence of these bases determine the instructions for building and maintaining an organism.
4. Hydrogen bonds: Weak chemical bonds that form between the nitrogenous bases of the DNA molecule, holding the two strands of the double helix together.
5. Nucleotides: The building blocks of DNA, each consisting of a phosphate group, a deoxyribose sugar, and a nitrogenous base. Multiple nucleotides link together to form the DNA strand.
the components of dna molecule that provide the code of life
1 answer