Question

which biomolecule is responsible for storing energy, forming membranes, and acting as a chemical messenger?
nucleic acids
proteins
lipids
carbohydrates

Explanation:

Lipids store energy in the form of fats, are a major component of cell membranes, and can act as chemical messengers (such as certain hormones). Nucleic acids store and transmit genetic information. Proteins have functions like catalysis, structural support, and transport but are not the main energy - storing molecules for energy storage, membrane - forming, and chemical - messenger roles combined. Carbohydrates are mainly for quick energy supply and structural support in some organisms.

Answer:

C. Lipids