Proteins Use the Process of Active Transport to Move Substances

Proteins use the process of active transport to move substances by:

A) opening passages in the membrane and escorting substances into and out of the cell
B) attaching themselves to minerals to carry them throughout the bloodstream
C) decreasing the water content in cells to get rid of excess acid or base levels
D) sending antibodies to cells to carry excess proteins out to where they are needed
E) accumulating hydrogen ions within the cell to attract the substances