Do all types of active transport use ATP energy?

Not all types of active transport directly use ATP as an energy source. Primary active transport relies on ATP to move substances against their concentration gradient, such as the sodium-potassium pump. In contrast, secondary active transport utilizes the energy generated from the movement of one molecule down its gradient to drive the transport of another molecule against its gradient, often indirectly linked to ATP usage. Therefore, while ATP is crucial in some active transport processes, it is not a requirement for all.