Question

In secondary active transport, energy needed for the movement of a molecule is most often obtained from __________.

Answer 1

Secondary active transport obtains energy from the electrochemical gradient created by primary active transport.

Step-by-step explanation:

In secondary active transport, the energy needed for the movement of a molecule is most often obtained from the electrochemical gradient established by primary active transport. Primary active transport, which is directly dependent on ATP, creates an electrochemical gradient by moving ions across the membrane. This electrochemical gradient then provides the energy for secondary active transport to move other substances, such as amino acids and glucose, into the cell against their concentration gradient.