In secondary active transport, energy is required directly by the carrier to move a substance uphill against a concentration gradient.

Question

Quizplus · Accepted Answer

In secondary active transport, the energy required to move a substance against its concentration gradient is indirectly obtained from the energy stored in the gradient of another substance (typically sodium ions) moving down its gradient, not directly from ATP or another form of energy.

In Secondary Active Transport, Energy Is Required Directly by the Carrier