Question

which macromolecule is the primary source of energy for cells. lipids nucleic acid proteins carbohydrates

Explanation:

Carbohydrates, such as glucose, are broken down through cellular respiration (like glycolysis) to produce ATP, which is the energy currency of the cell. Lipids are more for energy storage (like long - term), proteins are mainly for structure, enzymes, etc., and nucleic acids (DNA/RNA) are for genetic information storage and expression.

Answer:

Carbohydrates