Which statement about nucleotides is correct?

Nucleotides are indeed made up of three components: a nitrogenous base, a sugar (which can be ribose or deoxyribose), and a phosphate group. This structure is fundamental to their role in biology. Nucleotides serve as the monomers that link together to form nucleic acids, such as DNA and RNA, which are essential for the storage and transmission of genetic information.

In addition to forming nucleic acids, nucleotides also play several critical roles in cellular processes. For instance, they are involved in cell signaling (e.g., cyclic AMP), serve as coenzymes (e.g., NAD+, NADP+), and participate in energy transfer processes (e.g., ATP). Thus, while they are crucial for energy storage and transfer, their functions extend far beyond just energy-related roles. The correct structure of nucleotides allows them to fulfill these diverse functions effectively.