1. A sugar molecule: This is deoxyribose in DNA.
2. A phosphate group: This is attached to the 5' carbon of the sugar.
3. A nitrogenous base: There are four different nitrogenous bases in DNA:
* Adenine (A)
* Guanine (G)
* Cytosine (C)
* Thymine (T)
These nucleotides are linked together in a chain, forming the DNA molecule. The phosphate group of one nucleotide bonds to the sugar of the next nucleotide, creating a sugar-phosphate backbone. The nitrogenous bases project inwards from the backbone and form hydrogen bonds with complementary bases on another DNA strand, creating the double helix structure.
