Final answer:
A nucleotide consists of a pentose sugar, a phosphate group, and a nitrogen-containing base. These components come together to form the building blocks of nucleic acids, such as DNA and RNA.
Step-by-step explanation:
A nucleotide consists of a pentose sugar, a phosphate group, and a nitrogen-containing base. The pentose sugar can be either deoxyribose (in DNA) or ribose (in RNA), and the phosphate group is an anion of phosphoric acid. The nitrogen-containing base can be adenine, cytosine, guanine, thymine, or uracil. These components come together to form the building blocks of nucleic acids, such as DNA and RNA.