What are the macro-molecules found in onions?

Onions primarily contain carbohydrates, particularly in the form of sugars and dietary fiber. They also have small amounts of proteins and fats, although these are not their dominant components. Additionally, onions are rich in various vitamins, minerals, and phytochemicals, such as flavonoids, which contribute to their health benefits. Overall, the main macromolecules in onions are carbohydrates, with proteins and fats present in lesser quantities.