Which macromolecules is the primary source of energy for cells?

Answer 1

The primary source of energy for cells is carbohydrates. Specifically, glucose, a simple sugar, is a key carbohydrate that is broken down during cellular respiration to produce ATP (adenosine triphosphate), the main energy currency of the cell. While fats (lipids) and proteins can also provide energy, carbohydrates are typically the preferred and most readily available source for cellular energy.