Which of the following functions does active transport perform in a cell

functions

Primary active transport moves ions across a membrane and creates a difference in charge across that membrane. The primary active transport system uses ATP to move a substance, such as an ion, into the cell, and often at the same time, a second substance is moved out of the cell.

i believe the answer is c

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!