There are two basic types of active transport.The difference between them is
A) the energy source each uses to move substances across a membrane.
B) the type of transporters each uses to move substances across a membrane.
C) the direction in which each moves substances across a membrane.
D) the type of membrane across which substances are moved.
E) the amount of energy each requires for moving substances across a membrane.

Question

Quizplus · Accepted Answer

The two basic types of active transport are primary active transport and secondary active transport. The difference between them is the energy source each uses to move substances across a membrane. Primary active transport uses ATP (adenosine triphosphate) as its energy source, while secondary active transport uses the energy stored in the electrochemical gradient of ions such as Na+ and H+.

There Are Two Basic Types of Active Transport