Final answer:
DNA is composed of four nucleotides: Adenine, Guanine, Cytosine, and Thymine. Each nucleotide consists of a nitrogenous base, a 5-carbon sugar (deoxyribose), and a phosphate group. These nucleotides pair up (A with T and C with G) to form the double helix of DNA.
Step-by-step explanation:
The four types of nucleotides associated with DNA and their components are as follows:
- Adenine (A) - a purine nitrogenous base.
- Guanine (G) - a purine nitrogenous base.
- Cytosine (C) - a pyrimidine nitrogenous base.
- Thymine (T) - a pyrimidine nitrogenous base.
Each of these nucleotides is made up of three parts: a nitrogenous base (Adenine, Guanine, Cytosine, or Thymine), a 5-carbon sugar (deoxyribose), and a phosphate group. The structure of DNA is formed by nucleotides linking together, with the sugar and phosphate forming the backbone and the nitrogenous bases protruding from it. Hydrogen bonds between complementary bases (A with T, and C with G) across the two DNA strands help to hold the double helix structure together.