Which biomolecule group includes sugars and starches?

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Sugars and starches are carbohydrates. Carbohydrates include simple sugars like glucose and complex forms like starch, all built from carbon, hydrogen, and oxygen in roughly a 1:2:1 ratio. They provide quick energy and, in their larger forms, serve as storage (starch in plants, glycogen in animals) or even structural roles (cellulose in plants). The other biomolecule groups don’t include sugars and starches: lipids are mainly fats and oils used for long‑term energy storage and membranes; proteins are built from amino acids and do the work of cells; nucleic acids store and transmit genetic information.