Which of the following components make up a nucleotide?

A nucleotide is a fundamental unit of nucleic acids, which include DNA and RNA. It is composed of three key components: a sugar molecule, a phosphate group, and a nitrogenous base. The sugar can be ribose in RNA or deoxyribose in DNA. The phosphate group is what connects the nucleotides together to form the backbone of the DNA or RNA strand, while the nitrogenous base is responsible for encoding genetic information.

The other choices provided do not accurately describe the composition of a nucleotide. For instance, including lipids or amino acids in the composition is incorrect as these are components of other biological molecules (lipids are fatty substances, and amino acids are the building blocks of proteins). Glucose is a specific type of sugar, but it is not the sugar component of nucleotides. Thus, the choice that lists sugar, phosphate, and base accurately represents what constitutes a nucleotide.