Proteins Use the Process of Active Transport to Move Substances

Proteins use the process of active transport to move substances into or out of the cell by:​

A) opening passages in the membrane and escorting substances into the cell.
B) attaching 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) ​binding to insoluble molecules and moving them through osmosis.