Question

which macromolecule is digested in both the stomach & small intestines & is used by the body to repair cells & to create enzymes. carbohydrates proteins nucleic acids lipids

Explanation:

Carbohydrates are mainly digested in the mouth and small - intestine. Nucleic acids are digested in the small intestine. Lipids are digested in the small intestine. Proteins are digested in the stomach (by pepsin) and small intestine (by trypsin, chymotrypsin etc.) and are used by the body to create enzymes and for repair and growth of cells.

Answer:

Proteins