When Are Macromolecules Important?

Gigantic molecules, called macromolecules, populate a cell and provide it with important functions for life. For example, macromolecules provide structural support, a source of stored fuel, the ability to store and retrieve genetic information, and the ability to speed biochemical reactions.

What macromolecules are most important?

Proteins. After nucleic acids, proteins are the most important macromolecules. Structurally, proteins are the most complex macromolecules.

What macromolecules do we need?

The four major biological macromolecules are carbohydrates, lipids, proteins and nucleic acids. Macronutrient refers specifically to the macromolecules that provide dietary energy to the body. The main macronutrients are carbohydrates, fats and proteins. Macronutrient is the term used when discussing human nutrition.