Question

match the letter to the corresponding structure

Explanation:

• A: The structure labeled A has a phosphorus atom (P) surrounded by oxygen atoms (O), which is characteristic of a phosphate group.
• B: The structure labeled B is a nitrogen - containing ring structure, which is typical of a nitrogenous base.
• C: The structure labeled C is a five - carbon ring with hydroxyl (-OH) groups, which is the general structure of a sugar (in this case, a pentose sugar).

Answer:

A. Phosphate group
B. Nitrogenous base
C. Sugar