Question

which macromolecule is digested in both the stomach and small intestine and is used by the body to repair and build cells and to create enzymes?
options: carbohydrates, lipids, nucleic acids (or similar, based on visible text)

Explanation:

To solve this, we analyze each option:

• Carbohydrates: Mainly provide energy, not for building/repairing cells or making enzymes.
• Lipids: Store energy, form cell membranes, not for cell repair/building or enzyme creation.
• Amino acids: Are the building blocks of proteins. Proteins are used for cell repair/building and enzyme creation. Also, protein digestion (breaking into amino acids) occurs in stomach and small intestine.

Answer:

The correct option is the one related to amino acids (assuming the third option is amino acids, e.g., if options are A. Carbohydrates, B. Lipids, C. Amino acids, then C. Amino acids).